County police, often (but not always) called county sheriffs in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

, are

police The police are a constituted body of persons empowered by a state, with the aim to enforce the law, to ensure the safety, health and possessions of citizens, and to prevent crime and civil disorder. Their lawful powers include arrest and t ...

forces existing primarily in the

that possess primary jurisdiction over an entire

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

England and Wales England and Wales () is one of the three legal jurisdictions of the United Kingdom. It covers the constituent countries England and Wales and was formed by the Laws in Wales Acts 1535 and 1542. The substantive law of the jurisdiction is Eng ...

, two constituent countries of the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

, are policed by

territorial police force A territorial police force is a police service that is responsible for an area defined by sub-national boundaries, distinguished from other police services which deal with the entire country or a type of crime. In countries organized as federations, ...

s which are largely formed on a county basis. Historically,

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...

and

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

, the other two constituent countries of the UK, have had county police, although both countries now have unified national police services.

Sweden

Until the end of 2014, all of the 21

counties of Sweden The counties of Sweden (Swedish: ''Sveriges län'') are the top-level geographic subdivisions of Sweden. Sweden is today divided into 21 counties; however, the number of counties has varied over time, due to territorial gains/losses and to d ...

had its own County Police Department. In 2015, Sweden merged all local police departments into a single police agency, dividing the country into seven police regions instead.

United Kingdom

* In

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

, the police are divided into 39 regional forces, which all provide full services throughout their districts. * In

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

, the police are divided into 4 regional forces, which all provide full services throughout their districts. * In

and

, the police are national forces, which provide full services.

Territorial police forces

Territorial police forces that have a presence at a regional and county level in England and Wales are: *

Avon and Somerset Constabulary Avon and Somerset Police is the territorial police force responsible for law enforcement in the county of Somerset and in four districts that used to be in the defunct county of Avon: Bristol, Bath and North East Somerset, North Somerset and ...

* Bedfordshire Police * Cambridgeshire Constabulary *

Cheshire Constabulary Cheshire Constabulary is the territorial police force responsible for policing the English unitary authorities of Cheshire East, Cheshire West and Chester, Borough of Halton and Borough of Warrington. The force is responsible for policing an are ...

City of London Police The City of London Police is the territorial police force responsible for law enforcement within the City of London, including the Middle and Inner Temples. The force responsible for law enforcement within the remainder of the London region, ou ...

Cleveland Police Cleveland Police is the territorial police force responsible for the policing area corresponding to the former county of Cleveland in Northern England. As of September 2017, the force had 1,274 police officers, 278 police staff, 124 police com ...

Cumbria Constabulary Cumbria Constabulary is the territorial police force in England covering Cumbria. As of September 2017, the force had 1,108 police officers, 535 police staff, 93 police community support officers, and 86 special constables. The force serves a ...

* Derbyshire Constabulary *

Devon and Cornwall Police Devon and Cornwall Police is the territorial police force responsible for policing the ceremonial counties of Devon and Cornwall (including the Isles of Scilly) in England. The force serves approximately 1.8 million people over an area of . Hi ...

Dorset Police Dorset Police is the territorial police force responsible for policing the county of Dorset in the south-west of England, which includes the largely rural area covered by Dorset Council, and the urban conurbation of Bournemouth, Christchurch a ...

Durham Constabulary Durham Constabulary is the territorial police force responsible for policing ceremonial county of County Durham in North East England. The force’s area is bordered by Cumbria Constabulary to the west, Cleveland Police to the south east, Nor ...

Dyfed–Powys Police Dyfed–Powys Police ( cy, Heddlu Dyfed–Powys) is the territorial police force in Wales policing Carmarthenshire, Ceredigion and Pembrokeshire (which make up the former administrative area of Dyfed) and the unitary authority of Powys (cover ...

Essex Police Essex Police is a territorial police force responsible for policing the county of Essex, in the East of England. Essex Police is responsible for a population of over 1.8 million people and an area of . The chief constable is Ben-Julian Harri ...

Gloucestershire Constabulary Gloucestershire Constabulary is the territorial police force responsible for policing the non-metropolitan county of Gloucestershire in England. The force formerly covered the area of South Gloucestershire, however this was transformed to the ...

Greater Manchester Police Greater Manchester Police (GMP) is the territorial police force responsible for law enforcement within the metropolitan county of Greater Manchester in North West England. , Greater Manchester Police employed 6,866 police officers, 3,524 memb ...

Gwent Police Gwent Police ( cy, Heddlu Gwent) is a territorial police force in Wales, responsible for policing the local authority areas of Blaenau Gwent, Caerphilly, Monmouthshire, Newport and Torfaen. The force was formed in 1967 by the amalgamation o ...

Hampshire Constabulary The Hampshire and Isle of Wight Constabulary is the territorial police force responsible for policing the counties of Hampshire and the Isle of Wight in South East England.Hampshire Constabulary, 2012 Retrieved 27 April 2012 The force area inc ...

Hertfordshire Constabulary Hertfordshire Constabulary is the territorial police force responsible for policing the county of Hertfordshire in England. Its headquarters is in Welwyn Garden City. The current chief constable is Charlie Hall. As of March 2019, the force consi ...

Humberside Police Humberside Police is the territorial police force responsible for policing The East Riding of Yorkshire including Hull and northern parts of Lincolnshire including Grimsby and Scunthorpe. The chief constable since 2017 is Lee Freeman. Histor ...

Kent Police Kent Police is the territorial police force responsible for policing the and approximately 1.8 million inhabitants of Kent, a county in the south east of England. History On 14 January 1857, a 222-strong 'Kent County Constabulary' was formed u ...

Lancashire Constabulary Lancashire Constabulary is the territorial police force responsible for policing the ceremonial county of Lancashire in North West England. The force's headquarters are at Hutton, near the city of Preston. , the force has 3,088 police officers ...

Leicestershire Police Leicestershire Police is the territorial police force responsible for policing Leicestershire and Rutland in England. Its headquarters are at Enderby, Leicestershire. History Leicestershire Police was formed in 1839. In 1951 it amalgamated ...

Lincolnshire Police Lincolnshire Police is the territorial police force covering the non-metropolitan county of Lincolnshire in the East Midlands of England. Despite the name, the force's area does not include North East Lincolnshire and North Lincolnshire, which ...

Merseyside Police Merseyside Police is the territorial police force responsible for policing Merseyside in North West England. The service area is 647 square kilometres with a population of around 1.5 million. As of September 2017 the service has 3,484 police of ...

Metropolitan Police The Metropolitan Police Service (MPS), formerly and still commonly known as the Metropolitan Police (and informally as the Met Police, the Met, Scotland Yard, or the Yard), is the territorial police force responsible for law enforcement and ...

* Norfolk Constabulary *

North Wales Police North Wales Police ( cy, Heddlu Gogledd Cymru) is the territorial police force responsible for policing North Wales. Its headquarters are in Colwyn Bay. , the force has 1,510 police officers, 170 special constables, 182 police community support ...

Northamptonshire Police Northamptonshire Police (colloquially known as Northants Police) is the territorial police force responsible for policing the county of Northamptonshire in the East Midlands of England, in the United Kingdom. The Northampton Police area includ ...

Northumbria Police Northumbria Police is a territorial police force in England. It is responsible for policing the metropolitan boroughs of Newcastle upon Tyne, Gateshead, North Tyneside, South Tyneside and the City of Sunderland, as well as the ceremonial c ...

North Yorkshire Police North Yorkshire Police is the territorial police force covering the non-metropolitan county of North Yorkshire and the unitary authority of York in northern England. As of September 2018 the force had a strength of 1,357 police officers, 127 ...

Nottinghamshire Police Nottinghamshire Police is the territorial police force responsible for policing the shire county of Nottinghamshire and the unitary authority of Nottingham in the East Midlands area of England. The area has a population of just over 1 million. ...

Police Service of Northern Ireland The Police Service of Northern Ireland (PSNI; ga, Seirbhís Póilíneachta Thuaisceart Éireann; Ulster Scots dialects, Ulster-Scots: ') is the police, police force that serves Northern Ireland. It is the successor to the Royal Ulster Constabu ...

Police Scotland Police Scotland ( gd, Poileas Alba), officially the Police Service of Scotland (), is the national police force of Scotland. It was formed in 2013, through the merging of eight regional police forces in Scotland, as well as the specialist service ...

South Wales Police South Wales Police ( cy, Heddlu De Cymru) is one of the four territorial police forces in Wales. It is headquartered in Bridgend. The force was formed as South Wales Constabulary on 1 June 1969, by the amalgamation of the former Glamorgan Const ...

South Yorkshire Police South Yorkshire Police (SYP) is the territorial police force responsible for policing South Yorkshire in England. The force is led by Chief Constable Lauren Poultney. Oversight is conducted by Police and Crime Commissioner Alan Billings. T ...

Staffordshire Police Staffordshire Police is the territorial police force responsible for policing Staffordshire and Stoke-on-Trent in the West Midlands of England. It is made up of eleven Local Policing Teams, whose boundaries are matched to the nine local authorit ...

* Suffolk Constabulary *

Surrey Police Surrey Police is the territorial police force responsible for policing the county of Surrey in South East England. The force is currently led by Chief Constable Gavin Stephens. Previously the force was led by Nick Ephgrave who left the force ...

Sussex Police Sussex Police is the territorial police force responsible for policing in the whole of Sussex. Its jurisdiction covers the ceremonial counties of East Sussex and West Sussex. The force is headquartered in Malling House, Lewes, East Sussex. His ...

Thames Valley Police Thames Valley Police is the territorial police force responsible for policing the Thames Valley, covering the counties of Berkshire, Buckinghamshire and Oxfordshire. It the largest non-metropolitan police force in England and Wales, covering a ...

Warwickshire Police Warwickshire Police is the territorial police force responsible for policing Warwickshire in England. It is the second smallest territorial police force in England and Wales after the City of London Police, with only 823 (full-time equivalents ...

West Mercia Police West Mercia Police (), formerly the West Mercia Constabulary, is the territorial police force responsible for policing the counties of Herefordshire, Shropshire (including Telford and Wrekin) and Worcestershire in England. The force area cover ...

West Midlands Police West Midlands Police is the territorial police force responsible for policing the metropolitan county of West Midlands in England. The force covers an area of with 2.93million inhabitants, which includes the cities of Birmingham, Coventry, W ...

West Yorkshire Police West Yorkshire Police is the territorial police force responsible for policing the metropolitan county of West Yorkshire, England. It is the fourth largest territorial police force in England and Wales by number of officers. History West Yor ...

Wiltshire Police Wiltshire Police, formerly known as Wiltshire Constabulary, is the territorial police force responsible for policing the county of Wiltshire (including the Borough of Swindon) in South West England. The force serves 722,000 people over an area ...

United States

In the United States, the powers, duties, and even existence of county police forces vary widely depending on the

state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States * ''Our S ...

, and even on the particular

(

parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one or m ...

Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is borde ...

) within a state. County police forces as autonomous entities are relatively rare and tend to exist only in metropolitan counties. Many states also have a county sheriff's office which are usually formed on a county basis and traditionally carry out duties related to the functioning of the

courts A court is any person or institution, often as a government institution, with the authority to adjudicate legal disputes between parties and carry out the administration of justice in civil, criminal, and administrative matters in accordance ...

and legal system, such as

service of process Service of process is the procedure by which a party to a lawsuit gives an appropriate notice of initial legal action to another party (such as a defendant), court, or administrative body in an effort to exercise jurisdiction over that person s ...

, executing legal

writ In common law, a writ (Anglo-Saxon ''gewrit'', Latin ''breve'') is a formal written order issued by a body with administrative or judicial jurisdiction; in modern usage, this body is generally a court. Warrants, prerogative writs, subpoenas, a ...

s, and protection for the local

courthouse A courthouse or court house is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English-spe ...

and its

judge A judge is a person who presides over court proceedings, either alone or as a part of a panel of judges. A judge hears all the witnesses and any other evidence presented by the barristers or solicitors of the case, assesses the credibility an ...

s. Many state constitutions mandate that the position of sheriff be created, which leads many states to also give sheriffs the duties of a county police to avoid having overlapping departments with similar duties, leaving the sheriff as the exclusive law enforcement agency for a county. Some counties that previously had both a county police force and a sheriff's office have merged the two, leaving the sheriff in command of the unified force, as the sheriff derives his power directly from the constitution; the most prominent example of such a merger is the

Las Vegas Metropolitan Police Department The Las Vegas Metropolitan Police Department (also known as the LVMPD or Metro) is a combined city and county law enforcement agency for the City of Las Vegas and Clark County, Nevada, United States. It is headed by the Sheriff of Clark County, ...

which is actually led by the county sheriff despite its name. County police tend to fall into three broad categories: *Full-service police departments, which provide the full spectrum of police services to the entire county, irrespective of local communities, and may provide contractual

security police Security police officers are employed by or for a governmental agency or corporations to provide security service security services to those properties. Security police protect facilities, properties, personnel, users, visitors and enforce cer ...

services to special districts within the county. **Hawaii has only county police; there are no local police. *Limited service police departments, which provide services to unincorporated areas of the county (and may provide services to some incorporated areas by contract), and usually provide contractual security police services to special districts within the county. *Restricted service police departments, which provide

duties to county owned and operated facilities and parks. Some may also perform some road patrol duties on county built and maintained roads, and provide support to municipal police departments in the county. Note:

County detective In the United States, county detectives or district attorney investigators are peace officers employed by the district attorney's office of their respective county. County detectives generally exist in the Northeastern United States, such as New J ...

s, who are maintained in the northeastern states by

county attorney In the United States, a district attorney (DA), county attorney, state's attorney, prosecuting attorney, commonwealth's attorney, or state attorney is the chief prosecutor and/or chief law enforcement officer representing a U.S. state in a loc ...

s' offices, fall within this category. In the state of

, a county is known as a

. In the state of

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

, a county is known as a

borough A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle Ag ...

. The only borough in Alaska to have their own police department is

North Slope Borough The North Slope Borough is the northernmost borough in the US state of Alaska and thus, the northernmost county or equivalent of the United States as a whole. As of the 2020 census, the population was 11,031. The borough seat and largest city i ...

U.S. departments

There are 3,141 counties in the United States and some of the following county police departments are:

A to M

Albemarle County Police Department Albemarle may refer to: People * Albemarle (given name) * Duke of Albemarle, includes a list of the dukes * Earl of Albemarle, includes a list of the earls Places United States * Albemarle, North Carolina, a city * Albemarle Sound, an estuary on ...

Albemarle County, Virginia Albemarle County is a county located in the Piedmont region of the Commonwealth of Virginia. Its county seat is Charlottesville, which is an independent city and enclave entirely surrounded by the county. Albemarle County is part of the Char ...

- full service *Allegany County Bureau of Police, Allegany County, Maryland - full service, a division of the Allegany County Sheriff's Office. *

Allegheny County Police Department The Allegheny County Police Department is a law enforcement agency in Allegheny County, Pennsylvania. The department provides law enforcement services to County property, including the Pittsburgh International Airport, the Allegheny County Airpo ...

Allegheny County, Pennsylvania Allegheny County () is a county in the Commonwealth of Pennsylvania. It is located in Southwestern Pennsylvania. As of the 2020 census, the population was 1,250,578, making it the state's second-most populous county, following Philadelphia Co ...

- County-wide Authority - Detective Division- Uniform patrol county facilities and property. *

Anne Arundel County Police Department The Anne Arundel County Police Department is the primary law enforcement agency of Anne Arundel County, Maryland, United States, serving a population of more than 564,195 per 2015 census estimates across of jurisdiction. The Department was creat ...

Anne Arundel County, Maryland Anne Arundel County (; ), also notated as AA or A.A. County, is located in the U.S. state of Maryland. As of the 2020 United States census, its population was 588,261, an increase of just under 10% since 2010. Its county seat is Annapolis, whi ...

- full service * Arlington County Police Department,

Arlington County, Virginia Arlington County is a County (United States), county in the Virginia, Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the Washington, D.C., District of Co ...

- full service * Athens-Clarke County Police Department,

Clarke County, Georgia Clarke County is located in the northeastern part of the U.S. state of Georgia. As of the 2020 census, the population was 128,671. Its county seat is Athens, with which it is a consolidated city-county. Clarke County is included in the Athen ...

- full service *

Baltimore County Police The Baltimore County Police Department is the primary law enforcement agency for Baltimore County, Maryland. They have been accredited by Commission on Accreditation for Law Enforcement Agencies (C.A.L.E.A.) since 1984. Police chief The cur ...

Baltimore County, Maryland Baltimore County ( , locally: or ) is the third-most populous county in the U.S. state of Maryland and is part of the Baltimore metropolitan area. Baltimore County (which partially surrounds, though does not include, the independent City of ...

- full service *

Bergen County Police Department Bergen County is the most populous county in the U.S. state of New Jersey.Bergen County, New Jersey Bergen County is the most populous county in the U.S. state of New Jersey.Broome County, New York Broome County is a county in the U.S. state of New York. As of the 2020 United States census, the county had a population of 198,683. Its county seat is Binghamton. The county was named for John Broome, the state's lieutenant governor when Br ...

- full service *Broomfield Police Department, City and County of Broomfield, Colorado - full service * Broward County Department of Law Enforcement,

Broward County, Florida Broward County ( , ) is a county in the southeastern part of Florida, located in the Miami metropolitan area. It is Florida's second-most populous county after Miami-Dade County and the 17th-most populous in the United States, with over 1.94 m ...

- limited service *Cobb County Police Department,

Cobb County, Georgia Cobb County is a county in the U.S. state of Georgia, located in the Atlanta metropolitan area in the north central portion of the state. As of 2020 Census, the population was 766,149. Its county seat and largest city is Marietta. Along with ...

- Full service *

Camden County Police Department The Camden County Police Department (CCPD) is a county police department providing law enforcement services to the city of Camden, Camden County, New Jersey, formed in 2013. It is the successor to the Camden Police Department.Mast, George (April ...

Camden County, New Jersey Camden County is a county located in the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 523,485, an increase of 9,828 (1.9%) from the 2010 census, making it the state's 8th-largest county. Its county seat is ...

- limited service *

Charlotte-Mecklenburg Police Department The Charlotte-Mecklenburg Police Department (CMPD) is the police department of Mecklenburg County, North Carolina, United States, which includes the City of Charlotte. With 1,817 officers and 525 civilian staff as of 2020, covering an area of wi ...

Mecklenburg County, North Carolina Mecklenburg County is a county located in the southwestern region of the state of North Carolina, in the United States. As of the 2020 census, the population was 1,115,482, making it the second-most populous county in North Carolina (after Wak ...

- limited service (Only serves the city of Charlotte and works contracts with municipalities in Mecklenburg County after a loss of contract with the county making Mecklenburg County Sheriff the primary county law enforcement agency) *Chatham County Police Department,

Chatham County, Georgia Chatham County ( ) is located in the U.S. state of Georgia, on the state's Atlantic coast. The county seat and largest city is Savannah. One of the original counties of Georgia, Chatham County was created February 5, 1777, and is named after Will ...

- full service * Chesterfield County Police Department,

Chesterfield County, Virginia Chesterfield County is located just south of Richmond, Virginia, Richmond in the Commonwealth (U.S. state), Commonwealth of Virginia. The county's borders are primarily defined by the James River to the north and the Appomattox River to the sout ...

- full service *

Clark County Park Police Clark County Park Police is a police agency in Clark County, Nevada Nevada ( ; ) is a state in the Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to ...

Clark County, Nevada Clark County is located in the U.S. state of Nevada. As of the 2020 census, the population was 2,265,461. Most of the county population resides in the Las Vegas Census County Divisions, which hold 1,771,945 people as of the 2010 Census, across ...

- restricted service *Clayton County Police Department,

Clayton County, Georgia Clayton County is located in the north central portion of the U.S. state of Georgia. As of 2021, the population was estimated to be 297,100 by the Census Bureau. The county seat is Jonesboro. Clayton County is included in the Atlanta metr ...

- limited service *

Cook County Sheriff's Office The Cook County Sheriff's Office is the principal law enforcement agency that serves Cook County, Illinois, Cook County, Illinois. It is the second largest sheriff's department in the United States, with over 6,900 members when at full operationa ...

Cook County, Illinois Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40% of all residents of Illinois live within Cook County. As of 20 ...

- limited service *DeKalb County Sheriff's Office,

DeKalb County, Alabama DeKalb County is a county located in the northeastern part of the U.S. state of Alabama. As of the 2020 census, the population was 71,608. Its county seat is Fort Payne, and it is named after Major General Baron Johan DeKalb. DeKalb County is ...

- full service *Dougherty County Police Department,

Dougherty County, Georgia Dougherty County is located in the southwestern portion of the U.S. state of Georgia. As of the 2020 census, the population was 85,790. The county seat and sole incorporated city is Albany. Dougherty County is included in the Albany, GA Metr ...

- limited service * DeKalb County Police Department,

DeKalb County, Georgia DeKalb County (, , ) is located in the north central portion of the U.S. state of Georgia. As of the 2020 census, the population was 764,382, making it Georgia's fourth-most populous county. Its county seat is Decatur. DeKalb County is inclu ...

- limited service (By statute, DKPD has authority throughout the entire county, but yields this authority to incorporated municipalities that provide their own police services.) * Delaware County Courthouse and Park Police Department,

Delaware County, Pennsylvania Delaware County, colloquially referred to as Delco, is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. With a population of 576,830 as of the 2020 census, it is the List of counties in Pennsylvan ...

- restricted service *

Denver Police Department The Denver Police Department (DPD) is the full service police department jointly for the City and County of Denver, Colorado, which provides police services to the entire county, including Denver International Airport, and may provide contractu ...

, City and County of Denver, Colorado - full service *

Fairfax County Police Department The Fairfax County Police Department (FCPD) is a full-service law enforcement agency, located in Northern Virginia. The FCPD services a population of 1,081,726 residents within of Fairfax County, Virginia. The stated mission of the department i ...

Fairfax County, Virginia Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. It is part of Northern Virginia and borders both the city of Alexandria and Arlington County and forms part of the suburban ring of Washington, D.C. ...

- full service * Floyd County Police Department,

Floyd County, Georgia Floyd County is a county located in the northwestern part of the U.S. state of Georgia. As of the 2020 United States Census, the population was 98,584. The county seat is Rome. Floyd County comprises the Rome, GA metropolitan statistical area. ...

- full service * Floyd County Sheriff's Office,

- limited service * Fulton County Sheriff's Office,

Fulton County, Georgia Fulton County is located in the north-central portion of the U.S. state of Georgia. As of the 2020 United States census, the population was 1,066,710, making it the state's most-populous county and its only one with over one million inhabi ...

- limited service * Gaston County Police Department,

Gaston County, North Carolina Gaston County is a county in the U.S. state of North Carolina. As of the 2020 census, the population was 227,943. The county seat is Gastonia. Dallas served as the original county seat from 1846 until 1911. Gaston County is included in the C ...

- limited service *Glynn County Police Department,

Glynn County, Georgia Glynn County is located in the southeastern part of the U.S. state of Georgia. As of the 2010 census, the population was 79,626. The county seat is Brunswick. Glynn County is part of the Brunswick, Georgia Metropolitan Statistical Area. Hi ...

*Gwinnett County Police Department,

Gwinnett County, Georgia Gwinnett County ( ) is located in the north central portion of the U.S. state of Georgia (U.S. state), Georgia. It forms part of the Atlanta metropolitan area. In 2020 United States census, 2020, the population was 957,062, making it the secon ...

- full service (serves unincorporated Gwinnett County, and the cities of Berkeley Lake,

Buford Buford may refer to: Places United States *Buford, Arkansas *Buford, Colorado, an unincorporated community * Buford, Georgia *Buford Highway corridor, in Fulton, DeKalb, and Gwinnett Counties in Georgia * Buford, North Dakota *Buford, Ohio *Bufo ...

, Dacula, Grayson, Rest Haven,

Peachtree Corners Peachtree Corners is a city in Gwinnett County, Georgia, United States. It is part of the Atlanta metropolitan area, and is the largest city in Gwinnett County with a population of 42,243 as of the 2020 US Census. Peachtree Corners is the only ...

, and Sugar Hill) * Hawai‘i County Police Department,

Hawaii County, Hawaii Hawaii County ( haw, Kalana o Hawaiʻi) (officially known as the County of Hawaii) is a county in the U.S. state of Hawaii in the Hawaiian Islands. It is coextensive with the Island of Hawaii, often called the "Big Island" to distinguish it from ...

- full service * Henrico County Police Department,

Henrico County, Virginia Henrico County , officially the County of Henrico, is located in the Commonwealth of Virginia in the United States. As of the 2020 census, the population was 334,389 making it the fifth-most populous county in Virginia. Henrico County is incl ...

- full service *Henry County Police Department,

Henry County, Georgia Henry County is located in the north central portion of the U.S. state of Georgia. Per the 2020 census, the population of Henry County is 240,712, up from 203,922 in 2010. The county seat is McDonough. The county was named for Patrick Henry. He ...

- limited service *

Honolulu Police Department The Honolulu Police Department (HPD) is the principal law enforcement agency of the City and County of Honolulu, Hawaii, headquartered in the Alapa'i Police Headquarters in Honolulu CDP. Officially recognized as a part of the government of the ...

City and County of Honolulu, Hawaii Honolulu County (officially known as the City and County of Honolulu, formerly Oahu County) is a consolidated city–county in the U.S. state of Hawaii. The city–county includes both the city of Honolulu (the state's capital and largest ci ...

- full service *Horry County Police Department,

Horry County, South Carolina Horry County ( ) is the easternmost County (United States), county in the U.S. state of South Carolina. As of the 2010 United States census, 2020 census, its population was 351,029. It is the fourth-most populous county in South Carolina. The co ...

- limited service (full-time service of all unincorporated areas of

and part-time service of certain municipalities within the county by contract) *Houston County Sheriff's Department,

Houston County, Georgia Houston County ( ) is a county located in the central portion of the U.S. state of Georgia. The estimated 2019 population is 157,863. Its county seat is Perry; the city of Warner Robins is substantially larger in both area and population. ...

- limited service *

Howard County Police Department The Howard County Police Department (HCPD) is the primary law enforcement agency servicing 330,558 (20202) persons within the of Howard County, Maryland. History From the founding of Howard County until 1894, the county's law enforcement responsi ...

Howard County, Maryland Howard County is located in the U.S. state of Maryland. As of the 2010 census, the population was 287,085. As of the 2020 census its population rose to 328,200. Its county seat is Ellicott City. Howard County is included in the Baltimore-Colu ...

- full service *

Howard County Sheriff's Office The Howard County Sheriff's Office (HCSO) is a law enforcement organization which acts as the enforcement arm of the Howard County court system and services Howard County, Maryland, population 328,200. Its mission centers around providing judi ...

- limited service (full-time service for eight geographical sectors in Howard County) Howard County Sheriff's Office Patrol Operations
/ref> *James City County Police Department,

James City County, Virginia James City County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 78,254. Although politically separate from the county, the county seat is the adjacent independent city of Williamsburg. Located ...

- full service *Johnson County Sheriffs Department,

Johnson County, Kentucky Johnson County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 22,680. Its county seat is Paintsville. The county was formed in 1843 and named for Richard Mentor Johnson, War of 1812 general, Unite ...

-Full Service * Kauai County Police Department,

Kauai County, Hawaii Kauai County ( haw, Kalana o Kauaʻi) (officially known as the County of Kauai) is a County (United States), county in the U.S. state of Hawaii, Hawaii. It consists of the islands of Kauai, Kauai, Niʻihau, Niihau, Lehua, and Kaʻula, Kaula. As ...

- full service * Kenton County Police Department,

Kenton County, Kentucky Kenton County is a county located in the northern part of the Commonwealth of Kentucky. As of the 2020 census, the population was 169,064, making it the third most populous county in Kentucky (behind Jefferson County and Fayette County). It ...

- limited service *

- limited service *Lexington Division of Police, Fayette County, Kentucky - full service *Los Alamos County Police Department, Los Alamos County, New Mexico- full service *

Louisville Metro Police Department The Louisville Metro Police Department (LMPD) began operations on January 6, 2003, as part of the creation of the consolidated city-county government in Louisville, Kentucky, United States. It was formed by the merger of the Jefferson County Pol ...

Louisville Louisville ( , , ) is the largest city in the Commonwealth of Kentucky and the 28th most-populous city in the United States. Louisville is the historical seat and, since 2003, the nominal seat of Jefferson County, on the Indiana border. ...

and Jefferson County, Kentucky * Maryland-National Capital Park Police Department,

Montgomery County, Maryland Montgomery County is the most populous county in the state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010. The county seat and largest municipality is Rockville, although the census-design ...

and

Prince George's County, Maryland ) , demonym = Prince Georgian , ZIP codes = 20607–20774 , area codes = 240, 301 , founded date = April 23 , founded year = 1696 , named for = Prince George of Denmark , leader_title = Executive , leader_name = Angela D. Alsobroo ...

- restricted service * Maui County Police Department,

Maui County, Hawaii Maui County, officially the County of Maui, is a county in the U.S. state of Hawaii. It consists of the islands of Maui, Lānai, Molokai (except for a portion of Molokai that comprises Kalawao County), Kahoolawe, and Molokini. The latter two a ...

- full service * Mercer County Correctional Police Department,

Mercer County, New Jersey Mercer County is a county located in the U.S. state of New Jersey. Its county seat is Trenton, also the state capital, but also directly borders the Philadelphia metropolitan area and is included within the Federal Communications Commission's ...

- limited service * Metropolitan Nashville Police Department,

Davidson County, Tennessee Davidson County is a county in the U.S. state of Tennessee. It is located in the heart of Middle Tennessee. As of the 2020 census, the population was 715,884, making it the second most populous county in Tennessee. Its county seat is Nashville ...

- full service *

Miami-Dade Police Department The Miami-Dade Police Department (MDPD), formerly known as the Metro-Dade Police Department (1981–1997), Dade County Public Safety Department (1957–1981), and the Dade County Sheriff's Office (1836–1957), is a county police department ser ...

Miami-Dade County, Florida Miami-Dade County is a County (United States), county located in the southeastern part of the U.S. state of Florida. The county had a population of 2,701,767 as of the 2020 United States census, 2020 census, making it the most populous county in ...

- limited service *

Montgomery County Police Department The Montgomery County Police Department (MCPD), officially the Montgomery County Department of Police (MCP), is a nationally accredited agency and the primary law enforcement agency of Montgomery County, Maryland, providing the full spectrum ...

- full service *Morris County Park Police Department,

Morris County, New Jersey Morris County is a County (United States), county located in the U.S. state of New Jersey, about west of New York City. According to the 2020 United States census, 2020 census, the county's population was enumerated at 509,285,

- restricted service

N to Z

Nassau County Police Department The Nassau County Police Department is the law enforcement agency of Nassau County, New York. History In 1925, concerned about rising crime rates, the County Board of Supervisors voted to create the Nassau County Police Department, replacin ...

Nassau County, New York Nassau County ( ) is a county in the U.S. state of New York. At the 2020 U.S. census, Nassau County's population is 1,395,774. The county seat is Mineola and the largest town is Hempstead. Nassau County is situated on western Long Island ...

- full service *

New Castle County Police Department New Castle County is the northernmost of the three counties of the U.S. state of Delaware (New Castle, Kent, and Sussex). As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the ...

New Castle County, Delaware New Castle County is the northernmost of the three counties of the U.S. state of Delaware (New Castle, Kent, and Sussex). As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the ...

- full service *

New Orleans Police Department The New Orleans Police Department (NOPD) has primary responsibility for law enforcement in New Orleans, Louisiana. The department's jurisdiction covers all of Orleans Parish, while the city is divided into eight police districts. The NOPD has ...

Orleans Parish, Louisiana New Orleans ( , ,New Orleans

New York City Police Department The New York City Police Department (NYPD), officially the City of New York Police Department, established on May 23, 1845, is the primary municipal law enforcement agency within the City of New York, the largest and one of the oldest in ...

, covers five New York counties,

Bronx County The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Yor ...

, Kings County,

New York County Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...

, Queens County, and

Richmond County Richmond County may refer to places: Australia *Richmond County, New South Wales, a cadastral division Canada *Richmond County, Nova Scotia United Kingdom *Richmondshire, the original Richmond County in Yorkshire, England United States ...

- full service *Oldham County Police Department,

Oldham County, Kentucky Oldham County is a county located in the north central part of the U.S. state and commonwealth of Kentucky. As of the 2020 census, the population was 67,607. Its county seat is La Grange. The county is named for Colonel William Oldham. Oldha ...

- limited service *Onondaga County Sheriff's Office,

Onondaga County, New York Onondaga County ( ) is a county in the U.S. state of New York. As of the 2020 census, the population was 476,516. The county seat is Syracuse. Onondaga County is the core of the Syracuse, NY MSA. History The name ''Onondaga'' derives fro ...

- full service *Orangeburg County Sheriff’s Office, Orangeburg County, South Carolina- Full service *Philadelphia Police Department,

Philadelphia County, Pennsylvania Philadelphia County is a county in the Commonwealth of Pennsylvania. It is the most populous county in Pennsylvania. As of the 2020 census, Philadelphia County had a population of 1,603,797. The county is the second smallest county in Pennsy ...

- full service *Pima County Park Police Department,

Pima County, Arizona Pima County ( ) is a county in the south central region of the U.S. state of Arizona. As of the 2020 census, the population was 1,043,433, making it Arizona's second-most populous county. The county seat is Tucson, where most of the population ...

- restricted service * Prince George County Police Department,

Prince George County, Virginia Prince George County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 43,010. Its county seat is Prince George. Prince George County is located within the Greater Richmond Region of the U.S. st ...

- Full Service *

Prince George's County Police Department The Prince George's County Police Department (PGPD) is the primary law enforcement agency in Prince George's County, Maryland in the United States, servicing a population of over 900,000 residents and visitors within 498 square miles (1,290&n ...

- Full service *

Prince William County Police Department Prince William County Police Department (PWCPD) is a county police department in Prince William County, Virginia, United States. PWCPD has primary jurisdiction in all towns within the county, including Dumfries, Occoquan, Haymarket, and Quant ...

Prince William County, Virginia Prince William County is located on the Potomac River in the U.S. state of Virginia. As of the 2020 census, the population sits at 482,204, making it Virginia's second-most populous county. Its county seat is the independent city of Manassas ...

- Full service *Polk County Police Department, Polk County, Georgia - limited service *Riley County Police Department,

Riley County, Kansas Riley County (standard abbreviation: RL) is a county located in the U.S. state of Kansas. As of the 2020 census, the population was 71,959. The largest city and county seat is Manhattan. Riley County is home to two of Kansas's largest employer ...

- full service *Roanoke County Police Department,

Roanoke County, Virginia Roanoke County ( ) is a county located in the U.S. state of the Commonwealth of Virginia. As of the 2020 census, the population was 96,929. Its county seat is Salem, but the county administrative offices are located in the unincorporated Cave ...

- full service *St. Joseph County Police Department,

St. Joseph County, Indiana St. Joseph County, commonly called St. Joe County by residents, is a county located in the U.S. state of Indiana. As of the 2020 census, the population was 272,912, making it the fifth-most populous county in Indiana. Formed in 1830, it was n ...

- limited service *

St. Louis County Police Department The St. Louis County Police Department (SLCPD) is the primary and largest law enforcement agency serving St. Louis County in the U.S. state of Missouri. The current Chief of Police is Colonel Kenneth Gregory. According to the Charter of St. L ...

, St. Louis County, Missouri - full-service * San Francisco Police Department, City and County of San Francisco, California - full service *

St. Charles County Police Department St. Charles County is in the central eastern part of the U.S. state of Missouri. As of the 2020 census, the population was 405,262, making it Missouri's third-most populous county. Its county seat is St. Charles. The county was organized Octo ...

, St. Charles County, Missouri- full service * Savannah-Chatham Metropolitan Police Department,

- limited service (serves the city of

Savannah A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the Canopy (forest), canopy does not close. The open canopy allows sufficient light to rea ...

and unincorporated Chatham County) *

Spotsylvania County Sheriff's Office Spotsylvania County is a county in the U.S. state of Virginia. As of the July 2021 estimate, the population was 143,676. Its county seat is Spotsylvania Courthouse. History At the time of European encounter, the inhabitants of the area that bec ...

Spotsylvania County, Virginia Spotsylvania County is a county in the U.S. state of Virginia. As of the July 2021 estimate, the population was 143,676. Its county seat is Spotsylvania Courthouse. History At the time of European encounter, the inhabitants of the area that bec ...

* Suffolk County Park Police Department,

Suffolk County, New York Suffolk County () is the easternmost county in the U.S. state of New York. It is mainly located on the eastern end of Long Island, but also includes several smaller islands. According to the 2020 United States census, the county's populatio ...

- restricted service *

Suffolk County Police Department The Suffolk County Police Department (SCPD) provides police services to 5 of the 10 Towns in Suffolk County, New York, Suffolk County, New York (state), New York. It is one of the largest police agencies in the United States, with approximately ...

- limited service *Union County Police Department,

Union County, New Jersey Union County is a county in the northern part of the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 575,345, making it the seventh-most populous of New Jersey's 21 counties. Its county seat is Elizabeth.

- restricted service *

Westchester County Department of Public Safety There are forty-five Law enforcement agency, local police agencies in Westchester County, New York. As well as other county, state, and federal Law enforcement agencies, agencies responsible for protecting Westchester County, these agencies frequen ...

Westchester County, New York Westchester County is located in the U.S. state of New York. It is the seventh most populous county in the State of New York and the most populous north of New York City. According to the 2020 United States Census, the county had a population o ...

- restricted service *Westmoreland County Park Police Department,

Westmoreland County, Pennsylvania Westmoreland County is a county in the Commonwealth of Pennsylvania, United States. As of the 2020 census, the population was 364,663. The county seat is Greensburg. Formed from, successively, Lancaster, Northumberland, and later Bedford co ...

- restricted service

References

{{DEFAULTSORT:County Police Law enforcement units