Rock County, Wisconsin

administration
Rock County Courthouse
US state :	Wisconsin
Administrative headquarters :	Janesville
Address of the administrative headquarters:	County Courthouse 51 S Main Street Janesville, WI 53545-3951
Foundation :	1836
Made up from:	Original County
Area code :	001 608
Demographics
Residents :	160,331 (2010)
Population density :	85.9 inhabitants / km ²
geography
Total area :	1881 km²
Water surface :	15 km²
map

Website : www.co.rock.wi.us

The Rock County is a county in the US -amerikanischen State Wisconsin . In 2010 , the county had 160,331 residents and a population density of 85.9 people per square kilometer. The county seat is Janesville , named after Henry F. Janes, who was the first to provide a regular ferry service here.

geography

The county is located in southern Wisconsin and the Rock River flows through it. Rock County borders Illinois and has an area of 1,881 square kilometers, of which 15 square kilometers are water. It borders on the following counties:

	Dane County	Jefferson County
Green County		Walworth County
Winnebago County (Illinois)		Boone County (Illinois)

history

Rock County was formed in 1836 as the original county from parts of the Wisconsin Territory. It was named after the Rock River.

Population development
Census	Residents	± in%
1900	51.203	-
1910	55,538	8.5%
1920	66,150	19.1%
1930	74.206	12.2%
1940	80.173	8th %
1950	92,778	15.7%
1960	113.913	22.8%
1970	131,970	15.9%
1980	139,420	5.6%
1990	139,510	0.1%
2000	152,307	9.2%
2010	160.331	5.3%
2012 estimate	160,418	0.1%
1900–1990 2000 2010–2012

population

According to the 2010 census , Dane County had 160,331 people in 62,745 households. The population density was 85.9 inhabitants per square kilometer. Statistically, 2.5 people lived in each of the 62,745 households.

The racial the population was composed of 91.1 percent white, 5.1 percent African American, 0.5 percent Native American, 1.0 percent Asian, 0.1 percent Polynesian and other ethnic groups; 2.1 percent were descended from two or more races. Regardless of ethnicity, 7.9 percent of the population was Hispanic or Latino of any race.

24.3 percent of the population were under 18 years old, 61.3 percent were between 18 and 64 and 14.4 percent were 65 years or older. 50.9 percent of the population was female.

The median income for a household was 50,532 USD . The per capita income was $ 24,119. 13.3 percent of the population lived below the poverty line.

Rock County localities

Citys

Villages

Census-designated place (CDP)

Hanover

Unincorporated Communities

^{1 - partly in Green County

2 - partly in Dane County

3 - partly in Walworth County

4 - partly in Jefferson County}

structure

In addition to the six cities and three villages, Rock County is divided into 20 towns :

Town	Population (2010)	FIPS
Town of Avon	608	55-04100
Town of Beloit	7662	55-06525
Town of Bradford	1121	55-09175
Town of Center	1066	55-13625
Town of Clinton	930	55-15650
Town of Fulton	3252	55-28075
Town of Harmony	2569	55-32700
Town of Janesville	3434	55-37850
Town of Johnstown	778	55-38450
Town of La Prairie	834	55-42575

Town	Population (2010)	FIPS
Town of Lima	1280	55-44125
Town of Magnolia	767	55-48150
Town of Milton	2923	55-52225
Town of Newark	1541	55-56325
Town of Plymouth	1235	55-63675
Town of Porter	945	55-64225
Town of Rock	3196	55-68600
Town of Spring Valley	746	55-76325
Town of Turtle	2388	55-81050
Town of Union	2099	55-81650