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Carroll County, Iowa facts for kids

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Carroll County
Carroll County Courthouse
Carroll County Courthouse
Map of Iowa highlighting Carroll County
Location within the U.S. state of Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
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Country  United States
State  Iowa
Founded 1851
Named for Charles Carroll of Carrollton
Seat Carroll
Largest city Carroll
Area
 • Total 570 sq mi (1,500 km2)
 • Land 569 sq mi (1,470 km2)
 • Water 0.8 sq mi (2 km2)  0.1%
Population
 (2020)
 • Total 20,760
 • Density 36.4/sq mi (14.06/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district 4th

Carroll County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,760. Its county seat is Carroll. The county is named in honor of Charles Carroll of Carrollton, signer of the Declaration of Independence.

History

Carroll County was formed on January 15, 1851 from sections of Pottawattamie County. It was named after Charles Carroll of Carrollton, Maryland, the only Roman Catholic and longest-living signer of the Declaration of Independence. In 1855, the county government was established in Carrolton and in 1858, the first courthouse was built. In 1869, the seat was moved to Carroll City (today Carroll) which was centrally located and connected to the Chicago and North Western Transportation Company. The courthouse was destroyed in 1886 by fire. The present courthouse was erected in 1965. However the courthouse is set to go under construction in the near future

Geography

According to the U.S. Census Bureau, the county has a total area of 570 square miles (1,500 km2), of which 569 square miles (1,470 km2) is land and 0.8 square miles (2.1 km2) (0.1%) is water.

Major highways

  • US 30 (IA).svg U.S. Highway 30
  • US 71 (IA).svg U.S. Highway 71
  • Iowa 141.svg Iowa Highway 141

Adjacent counties

Demographics

Historical population
Census Pop.
1860 281
1870 2,451 772.2%
1880 12,351 403.9%
1890 18,825 52.4%
1900 20,319 7.9%
1910 20,117 −1.0%
1920 21,549 7.1%
1930 22,326 3.6%
1940 22,770 2.0%
1950 23,065 1.3%
1960 23,431 1.6%
1970 22,912 −2.2%
1980 22,951 0.2%
1990 21,423 −6.7%
2000 21,421 0.0%
2010 20,816 −2.8%
2020 20,760 −0.3%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2018
CarrollCountyIowaPop2020
Population of Carroll County from US census data

2020 census

The 2020 census recorded a population of 20,760 in the county, with a population density of 35.845/sq mi (13.840/km2). 97.14% of the population reported being of one race. 91.28% were non-Hispanic White, 1.26% were Black, 2.86% were Hispanic, 0.15% were Native American, 0.36% were Asian, 0.00% were Native Hawaiian or Pacific Islander and 4.08% were some other race or more than one race. There were 9,490 housing units of which 8,764 were occupied.

2010 census

The 2010 census recorded a population of 20,816 in the county, with a population density of 36.58/sq mi (14.12/km2). There were 9,376 housing units, of which 8,683 were occupied.

Communities

Townships

Carroll County is divided into sixteen townships:

  • Arcadia
  • Eden
  • Ewoldt
  • Glidden
  • Grant
  • Jasper
  • Kniest
  • Maple River
  • Newton
  • Pleasant Valley
  • Richland
  • Roselle
  • Sheridan
  • Union
  • Washington
  • Wheatland

Population ranking

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

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Carroll City 10,103
2 Manning City 1,500
3 Coon Rapids (partially in Guthrie County) City 1,305
4 Glidden City 1,146
5 Arcadia City 484
6 Breda City 483
7 Templeton City 362
8 Dedham City 266
9 Halbur City 246
10 Lidderdale City 180
11 Lanesboro City 121
12 Willey City 88
13 Ralston (partially in Greene County) City 79
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