Rock County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 163,687. Its county seat is Janesville. Rock County comprises the Janesville- Beloit, WI Metropolitan Statistical Area and is included in the

Madison Madison may refer to: People * Madison (name), a given name and a surname * James Madison (1751–1836), fourth president of the United States Place names * Madison, Wisconsin, the state capital of Wisconsin and the largest city known by this ...

-Janesville-Beloit, WI Combined Statistical Area.

History

Rock County was created in 1836 as a territorial county on December 7, 1836, from

Milwaukee County Milwaukee County is located in the U.S. state of Wisconsin. At the 2020 census, the population was 939,489, down from 947,735 in 2010. It is both the most populous and most densely populated county in Wisconsin, and the 45th most populous coun ...

and fully organized February 19, 1839. The county is named for the

Rock River Rock River may refer to: Streams ;United States * Rock River (Mississippi River), a tributary of the Mississippi River in Wisconsin and Illinois * Rock River (Iowa), a tributary of the Big Sioux River in Minnesota and Iowa * Rock River (Lake Mich ...

, which bisects the county from north to south.

Geography

According to the

U.S. Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...

, the county has a total area of , of which is land and (1.1%) is water. Cook Memorial Arboretum, a natural area with birding and nature trails, is located northwest of Janesville. It is owned by the

Janesville School District School District of Janesville (SDJ) is a school district headquartered in the Educational Services Center (ESC) in Janesville, Wisconsin. the district has 10,300 students in grades PK-12 and more than 1,500 employees. With 21 campuses it is the sta ...

Transportation

Major highways

Interstate 39 * I-43

Interstate 43 * I-90

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and ...

U.S. Highway 12 U.S. Route 12 (US 12) is an east–west United States highway, running from Aberdeen, Washington, to Detroit, Michigan, for almost . The highway has mostly been superseded by Interstate 90 (I-90) and I-94, but unlike most U.S. routes that ...

U.S. Highway 14 U.S. Route 14 (abbreviated U.S. 14 or US 14), an east–west route, is one of the original United States highways of 1926. It currently has a length of 1,398 miles (2,250 km), but it had a peak length of 1,429 miles (2,300 km). For ...

U.S. Highway 51 U.S. Route 51 or U.S. Highway 51 (US 51) is a major south-north United States highway that extends from the western suburbs of New Orleans, Louisiana, to within of the Wisconsin–Michigan state line. As most of the United States Numbered Highw ...

Highway 11 * WIS 26

Highway 26 * WIS 59

Highway 59 * WIS 67

Highway 67 * WIS 81

Highway 81 Route 81 or Highway 81 may refer to: International * Asian Highway 81 * European route E81 Australia * Escort Way (New South Wales) * Mulligan Highway and Peninsula Developmental Road – Queensland State Route 81 * (Victoria) Canada * Newf ...

Highway 89 * WIS 104

Highway 104 Route 104, or Highway 104, may refer to: Brazil * BR-104 Canada * New Brunswick Route 104 * Nova Scotia Highway 104 (Trans-Canada Highway) * Prince Edward Island Route 104 * Quebec Route 104 China * China National Highway 104 Costa Rica * ...

Highway 140 * WIS 213

Highway 213

Railroads

* Canadian Pacific * Union Pacific *

Wisconsin and Southern Railroad The Wisconsin and Southern Railroad is a Class II regional railroad in Southern Wisconsin and Northeastern Illinois currently operated by Watco. It operates former Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) and Chicago ...

Buses

Beloit Transit Beloit Transit is the public transportation system in Beloit, Wisconsin. It is owned and operated by the city of Beloit. History Public transit in Beloit began in 1902 with interurbans serving the city. Proper streetcar service followed in 190 ...

Janesville Transit System The Janesville Transit System is the primary provider of mass transportation in Janesville, Wisconsin. Using twenty vehicles, six regular routes are provided from Monday through Saturday. Late evening service is also available using the Nightline ...

* List of intercity bus stops in Wisconsin

Airport

Southern Wisconsin Regional Airport Southern Wisconsin Regional Airport is a public airport located southwest of Janesville and north of Beloit in Rock County, Wisconsin, United States. Formerly known as Rock County Airport, it is owned and operated by the Rock County governmen ...

(KJVL) serves Rock County and the surrounding communities.

Adjacent counties

* Green County – west * Dane County – north * Jefferson County – northeast * Walworth County – east * Boone County, Illinois – south * Winnebago County, Illinois – south

Demographics

As of the census of 2020, the population was 163,687. The population density was . There were 70,068 housing units at an average density of . The racial makeup of the county was 81.3% White, 5.1% Black or African American, 1.3%

Asian Asian may refer to: * Items from or related to the continent of Asia: ** Asian people, people in or descending from Asia ** Asian culture, the culture of the people from Asia ** Asian cuisine, food based on the style of food of the people from Asi ...

, 0.5% Native American, 4.6% from other races, and 7.2% from two or more races. Ethnically, the population was 9.7% Hispanic or

Latino Latino or Latinos most often refers to: * Latino (demonym), a term used in the United States for people with cultural ties to Latin America * Hispanic and Latino Americans in the United States * The people or cultures of Latin America; ** Latin A ...

of any race. As of the census of 2010, there were 160,331 people residing in the county. As of the census of 2000, were 152,307 people, 58,617 households, and 40,387 families residing in the county. The population density was 211 people per square mile (82/km²). there were 62,187 housing units at an average density of 86 per square mile (33/km²). The racial makeup of the county was 91.01% white, 4.63% black or African American, 0.28% Native American, 0.78%

, 0.04% Pacific Islander, 1.77% from other races, and 1.50% from two or more races. 3.91% of the population were Hispanic or

of any race. 32.8% were of

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

, 13.0% Norwegian, 10.1% Irish, 7.5% English and 5.5%

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

ancestry. There were 58,617 households, out of which 33.60% had children under the age of 18 living with them, 53.50% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognized union between people called spouses. It establishes rights and obligations between them, as well as between them and their children, and between t ...

living together, 10.90% had a female householder with no husband present, and 31.10% were non-families. 25.10% of all households were made up of individuals, and 9.70% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.03. In the county, the population was spread out, with 26.50% under the age of 18, 8.60% from 18 to 24, 29.80% from 25 to 44, 22.30% from 45 to 64, and 12.70% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 97.00 males. For every 100 females age 18 and over, there were 94.10 males.

Communities

Cities

* Beloit * Brodhead (mostly in Green County) * Edgerton (partly in Dane County) * Evansville * Janesville *

Milton Milton may refer to: Names * Milton (surname), a surname (and list of people with that surname) ** John Milton (1608–1674), English poet * Milton (given name) ** Milton Friedman (1912–2006), Nobel laureate in Economics, author of '' Free t ...

Villages

Clinton Clinton is an English toponymic surname, indicating one's ancestors came from English places called Glympton or Glinton.Hanks, P. & Hodges, F. ''A Dictionary of Surnames''. Oxford University Press, 1988 Clinton has frequently been used as a given ...

* Orfordville * Footville

Towns

* Avon * Beloit *

Bradford Bradford is a city and the administrative centre of the City of Bradford district in West Yorkshire, England. The city is in the Pennines' eastern foothills on the banks of the Bradford Beck. Bradford had a population of 349,561 at the 2011 ...

* Center *

* Edgerton * Fulton *

Harmony In music, harmony is the process by which individual sounds are joined together or composed into whole units or compositions. Often, the term harmony refers to simultaneously occurring frequencies, pitches ( tones, notes), or chords. However ...

* Janesville * Johnstown * La Prairie * Lima * Magnolia *

Newark Newark most commonly refers to: * Newark, New Jersey, city in the United States * Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area Newark may also refer to: Places Canada * Niagara-on-the ...

Plymouth Plymouth () is a port city and unitary authority in South West England. It is located on the south coast of Devon, approximately south-west of Exeter and south-west of London. It is bordered by Cornwall to the west and south-west. Plymouth ...

* Porter *

Rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...

* Spring Valley * Turtle * Union

Census-designated place

* Hanover

Unincorporated communities

* Afton * Anderson * Avon * Avalon * Belcrest * Bergen * Cainville * Center * Charlie Bluff * Cooksville * Coopers Shores * Crestview *

Emerald Grove Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium.Hurlbut, Cornelius S. Jr. and Kammerling, Robert C. (1991) ''Gemology'', John Wiley & Sons, New York, ...

* Fairfield (partial) * Foxhollow * Fulton * Indianford * Johnstown * Johnstown Center * Koshkonong (partial) * Leyden * Lima Center * Magnolia * Maple Beach *

* Newville *

Porters Porters may refer to: * Porters, Virginia, an unincorporated community in Virginia, United States * Porters, Wisconsin, an unincorporated community in Wisconsin, United States * Porters Ski Area, a ski resort in New Zealand * ''Porters'' (TV series ...

* Shopiere * Stebbinsville *

Tiffany Tiffany may refer to: People * Tiffany (given name), list of people with this name * Tiffany (surname), list of people with this surname Known mononymously as "Tiffany": * Tiffany Darwish, (born 1971), an American singer, songwriter, actress kn ...

* Union * Victory Heights

Ghost towns/neighborhoods

Fellows Fellows may refer to Fellow, in plural form. Fellows or Fellowes may also refer to: Places * Fellows, California, USA * Fellows, Wisconsin, ghost town, USA Other uses * Fellows Auctioneers, established in 1876. *Fellowes, Inc., manufacturer of wo ...

Jefferson Prairie Settlement Jefferson Prairie Settlement was a pioneer colony of Norwegian-Americans located in the Town of Clinton, in Rock County, Wisconsin, United States. This site and the nearby Rock Prairie settlement outside Orfordville served as centers for both N ...

Politics

Hillary Clinton carried the county in 2016, but it was the smallest margin of victory since Michael Dukakis in 1988.

Education

School districts include:
Text list
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Albany School District The City School District of Albany (also known as the Albany City School District) is the public school district of Albany, New York. The district is an independent public entity. It is governed by the City School District of Albany Board of Ed ...

Beloit School District The School District of Beloit is a school district in the county of Rock County, Wisconsin serving the City of Beloit. The School District of Beloit educates and nurtures close to 7,100 students in 6 elementary schools with limited class sizes ...

Beloit Turner School District Beloit may refer to Places in the United States * Beloit, Alabama * Beloit, Georgia *Beloit, Iowa * Beloit, Kansas * Beloit, Ohio *Beloit, Wisconsin * Beloit (town), Wisconsin, adjacent to the city of Beloit *Beloit Township, Mitchell County, Kansa ...

Brodhead School District Brodhead may refer to: People * Brodhead (surname) Places * Brodhead, Colorado, a US ghost town * Brodhead, Kentucky, a US city * Brodhead, Wisconsin, a US city * Brodhead Creek, a Pennsylvania stream * A hamlet in the town of Olive, New Yor ...

* Clinton Community School District * Delavan-Darien School District * Edgerton School District * Evansville Community School District *

Fort Atkinson School District A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...

Milton School District Milton may refer to: Names * Milton (surname), a surname (and list of people with that surname) ** John Milton (1608–1674), English poet * Milton (given name) ** Milton Friedman (1912–2006), Nobel laureate in Economics, author of '' Free ...

Oregon School District Oregon School District is located south of Madison, in the village of Oregon, Wisconsin Oregon is a village in Dane County, Wisconsin, Dane County, Wisconsin. As of the census of 2020, the population was 11,179. Oregon is part of the Madison, W ...

* Parkview School District *

Stoughton Area School District Stoughton Area School District (SASD) is a school district headquartered in Stoughton, Wisconsin. It includes sections of Dane County and Rock County. History In 1997 it began having 5th and 6th graders in Sandhill School. Beginning in the 1 ...

Whitewater School District Whitewater forms in a rapid context, in particular, when a river's gradient changes enough to generate so much turbulence that air is trapped within the water. This forms an unstable current that froths, making the water appear opaque and w ...

There is a state-operated school, Wisconsin School for the Blind and Visually Impaired.

Tree cities

* Beloit * Clinton * Edgerton * Evansville * Janesville

References

External links

Rock County government website

Rock County map
from the Wisconsin Department of Transportation
Rock County 5.0

Rock County Historical Society

Beloit Janesville Symphony
{{authority control 1839 establishments in Wisconsin Territory Populated places established in 1839