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Rock County is a county in the U.S. state of Wisconsin. As of 2000, the population was 152,307. Its county seat is Janesville6.
Geography
According to the U.S. Census Bureau, the county has a total area of 1,881 km² (726 mi²). 1,866 km² (720 mi²) of it is land and 15 km² (6 mi²) of it (0.79%) is water.
Demographics
As of the census² of 2000, there were 152,307 people, 58,617 households, and 40,387 families residing in the county. The population density was 82/km² (211/mi²). There were 62,187 housing units at an average density of 33/km² (86/mi²). The racial makeup of the county was 91.01% White, 4.63% Black or African American, 0.28% Native American, 0.78% Asian, 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 Latino of any race.
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 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.
Cities and towns
- Avon
- Beloit (town)
- Beloit
- Bradford
- Brodhead (partial)
- Center
- Clinton (town)
- Clinton (village)
- Edgerton
- Evansville
- Footville
- Fulton
- Harmony
- Janesville (city)
- Janesville (town)
- Johnstown
- La Prairie
- Lima
- Magnolia
- Milton (town)
- Milton
- Newark
- Orfordville
- Plymouth
- Porter
- Rock
- Spring Valley
- Turtle
- Union
"Rock County, Wisconsin"