Rock County, Minnesota

administration
Rock County Courthouse & Jail, listed on the NRHP since 1977
US state :	Minnesota
Administrative headquarters :	Luverne
Address of the administrative headquarters:	County Courthouse 204 E Brown Luverne, MN 56156
Foundation :	May 23, 1857
Made up from:	Brown County
Area code :	001 507
Demographics
Residents :	9687 (2010)
Population density :	7.7 inhabitants / km ²
geography
Total area :	1251 km²
Water surface :	1 km²
map

Website : www.co.rock.mn.us

The Rock County is a county in the US -amerikanischen State Minnesota . In 2010 the county had 9,687 residents and a population density of 7.7 people per square kilometer. The county seat is Luverne .

geography

Quartzite rocks in Blue Mounds State Park

Dam in Blue Mounds State Park

The county is located in the extreme southwest of Minnesota on the high plateau called Coteau des Prairies , which extends from eastern South Dakota to southwest Minnesota and northwestern Iowa .

The county covers an area of 1,251 square kilometers, one square kilometer of which is water. From north to south the county is traversed by the Rock River , a tributary of the Big Sioux River that flows into the Missouri .

In the center of the county is Blue Mounds State Park , a 634 acre state park .

The following neighboring counties border Rock County:

Moody County, South Dakota	Pipestone County	Murray County
Minnehaha County, South Dakota		Nobles County
	Lyon County, Iowa

history

Rock County was formed on May 23, 1857 from parts of Brown County. It was named after a large rock plateau that lies within the county.

Demographic data

Population development
Census	Residents	± in%
1860	23	-
1870	138	500%
1880	3669	2,558.7%
1890	6817	85.8%
1900	9668	41.8%
1910	10,222	5.7%
1920	10,965	7.3%
1930	10,962	-0%
1940	10,933	-0.3%
1950	11,278	3.2%
1960	11,864	5.2%
1970	11,346	-4.4%
1980	10,703	-5.7%
1990	9806	-8.4%
2000	9721	-0.9%
2010	9687	-0.3%
Before 1900 1900–1990 2000 2010

According to the 2010 census , Rock County had 9,687 people in 3,942 households. The population density was 7.7 people per square kilometer. Statistically, 2.38 people lived in 3942 households.

The racial the population was composed of 96.8 percent white, 0.7 percent African American, 0.5 percent Native American, 0.6 percent Asian and other ethnic groups; 1.3 percent were descended from two or more races. Hispanic or Latino of any race was 2.3 percent of the population.

25.8 percent of the population were under 18 years old, 55.4 percent were between 18 and 64 and 18.8 percent were 65 years or older. 50.6 percent of the population was female.

The median income for a household was 44,510 USD . The per capita income was $ 23,094. 11.1 percent of the population lived below the poverty line.

Rock County localities

Unincorporated Communities

^{1 - partially in Pipestone County}

structure

In addition to the eight cities, Rock County is divided into twelve townships :

Township	Population (2010)	FIPS
Battle Plain Township	199	27-03988
Beaver Creek Township	386	27-04510
Clinton Township	277	27-11998
Denver Township	173	27-15742
Kanaranzi Township	247	27-32336
Luverne Township	479	27-38582
Magnolia Township	212	27-39356
Martin Township	382	27-40796
Mound Township	252	27-44494
Rose Dell Township	216	27-55654
Springwater Township	252	27-62140
Vienna Township	156	27-67072