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Clarke County, Iowa facts for kids

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Clarke County
Clarke County Courthouse in Osceola
Clarke County Courthouse in Osceola
Map of Iowa highlighting Clarke County
Location within the U.S. state of Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
Country  United States
State  Iowa
Founded January 13, 1846
Named for James Clarke
Seat Osceola
Largest city Osceola
Area
 • Total 432 sq mi (1,120 km2)
 • Land 431 sq mi (1,120 km2)
 • Water 0.6 sq mi (2 km2)  0.1%
Population
 (2020)
 • Total 9,748
 • Density 22.565/sq mi (8.712/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district 2nd

Clarke County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 9,748. The county seat is Osceola. The county was formed in January 1846, one of twelve counties established by legislative action in a comprehensive act. It was named for James Clarke, a Governor of the Iowa Territory.

Geography

According to the U.S. Census Bureau, the county has a total area of 432 square miles (1,120 km2), of which 431 square miles (1,120 km2) is land and 0.6 square miles (1.6 km2) (0.1%) is water.

Major highways

Adjacent counties

Demographics

Historical population
Census Pop.
1850 79
1860 5,427 6,769.6%
1870 8,735 61.0%
1880 11,513 31.8%
1890 11,332 −1.6%
1900 12,440 9.8%
1910 10,736 −13.7%
1920 10,506 −2.1%
1930 10,384 −1.2%
1940 10,233 −1.5%
1950 9,369 −8.4%
1960 8,222 −12.2%
1970 7,581 −7.8%
1980 8,612 13.6%
1990 8,287 −3.8%
2000 9,133 10.2%
2010 9,286 1.7%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2018
ClarkeCountyIowaPop2020
Population of Clarke County from US census data

2020 census

The 2020 census recorded a population of 9,748 in the county, with a population density of 22.5422/sq mi (8.7036/km2). 93.18% of the population reported being of one race. 68.70% were non-Hispanic White, 0.45% were Black, 15.74% were Hispanic, 0.56% were Native American, 0.83% were Asian, 0.41% were Native Hawaiian or Pacific Islander and 13.31% were some other race or more than one race. There were 4,268 housing units of which 3,871 were occupied.

2010 census

The 2010 census recorded a population of 9,286 in the county, with a population density of 21.545/sq mi (8.319/km2). There were 4,086 housing units, of which 3,701 were occupied.

Population ranking

The population ranking of the following table is based on the 2020 census of Clarke County.

county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Osceola City 5,415
2 Murray City 684
3 Woodburn City 146
4 Weldon (mostly in Decatur County) City 136

Communities

Cities

Townships

  • Doyle
  • Franklin
  • Fremont
  • Green Bay
  • Jackson
  • Knox
  • Liberty
  • Madison
  • Osceola
  • Troy
  • Ward
  • Washington

Population ranking

The population ranking of the following table is based on the 2010 census of Clarke County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Osceola City 4,929
2 Murray City 756
3 Woodburn City 202
4 Weldon (mostly in Decatur County) City 125
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