The following is a list of the 67

counties 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 ...

of the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

. The city of

Philadelphia Philadelphia, often called Philly, is the List of municipalities in Pennsylvania#Municipalities, largest city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, the List of United States cities by population, sixth-largest city i ...

is coterminous with

Philadelphia County 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 Pennsyl ...

, the municipalities having been consolidated in 1854, and all remaining county government functions having been merged into the city after a 1951 referendum. Eight of the ten most populous counties are in the

southeastern The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each se ...

portion of the state, including four out of the top five, and eight of the top ten most populous counties are in either the

Pittsburgh Pittsburgh ( ) is a city in the Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylva ...

Metropolitan Statistical Area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally incorporated as a city or tow ...

FIPS code

The

Federal Information Processing Standard The Federal Information Processing Standards (FIPS) of the United States are a set of publicly announced standards that the National Institute of Standards and Technology (NIST) has developed for use in computer systems of non-military, America ...

(FIPS) code, used by the United States government to uniquely identify counties, is provided with each entry. FIPS codes are five-digit numbers; for Pennsylvania the codes start with 42 and are completed with the three-digit county code. The FIPS code for each county in the table links to census data for the specific county.

County list

Former counties

Pennsylvania Colony The Province of Pennsylvania, also known as the Pennsylvania Colony, was a British North American colony founded by William Penn after receiving a land grant from Charles II of England in 1681. The name Pennsylvania ("Penn's Woods") refers to Wi ...

's Three Lower Counties had been transferred from

New York Colony The Province of New York (1664–1776) was a British proprietary colony and later royal colony on the northeast coast of North America. As one of the Middle Colonies, New York achieved independence and worked with the others to found the Uni ...

in 1682. In 1701 these counties became a separate colony called

Delaware Colony Delaware Colony in the North American Middle Colonies consisted of land on the west bank of the Delaware River Bay. In the early 17th century the area was inhabited by Lenape and possibly the Assateague tribes of Native Americans. The first E ...

, although it shared the same colonial governor as Pennsylvania until independence in 1776.

References

{{Pennsylvania

Counties 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 ...

FIPS code

County list

Former counties

See also

References