Clarke County, Iowa facts for kids
Quick facts for kids
Clarke County
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Clarke County Courthouse in Osceola
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Location within the U.S. state of Iowa
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 Iowa's location within the U.S. |
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| 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)
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| • 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.
Contents
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
Interstate 35
U.S. Highway 34
U.S. Highway 69
Iowa Highway 152
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Adjacent counties
- Madison County (northwest)
- Warren County (northeast)
- Lucas County (east)
- Decatur County (south)
- Union County (west)
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 |
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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) |
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| 1 | † Osceola | City | 4,929 |
| 2 | Murray | City | 756 |
| 3 | Woodburn | City | 202 |
| 4 | Weldon (mostly in Decatur County) | City | 125 |
