Marion County, Iowa facts for kids

Kids Encyclopedia Facts
Marion County, Iowa
Map
Map of Iowa highlighting Marion County
Location in the state of Iowa
Map of the USA highlighting Iowa
Iowa's location in the U.S.
Statistics
Founded 1845
Seat Knoxville
Largest City Pella
Area
 - Total
 - Land
 - Water

571 sq mi (1,479 km²)
555 sq mi (1,437 km²)
16 sq mi (41 km²), 2.8%
Population
 - (2010)
 - Density

33,309
60/sq mi (23/km²)
Time zone Central: UTC-6/-5
Website: www.co.marion.ia.us/
Named for: Francis Marion

Marion County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 33,309. The county seat is Knoxville. It is named for Francis Marion, a brigadier general from South Carolina in the American Revolutionary War.

Geography

According to the U.S. Census Bureau, the county has a total area of 571 square miles (1,480 km2), of which 555 square miles (1,440 km2) is land and 16 square miles (41 km2) (2.8%) is water.

Major highways

  • Iowa 5.svg Iowa Highway 5
  • Iowa 14.svg Iowa Highway 14
  • Iowa 92.svg Iowa Highway 92
  • Iowa 163.svg Iowa Highway 163
  • Iowa 316.svg Iowa Highway 316

Adjacent counties

Demographics

Historical population
Census Pop.
1850 5,482
1860 16,813 206.7%
1870 24,436 45.3%
1880 25,111 2.8%
1890 23,058 −8.2%
1900 24,159 4.8%
1910 22,995 −4.8%
1920 24,957 8.5%
1930 25,727 3.1%
1940 27,019 5.0%
1950 25,930 −4.0%
1960 25,886 −0.2%
1970 26,352 1.8%
1980 29,669 12.6%
1990 30,001 1.1%
2000 32,052 6.8%
2010 33,309 3.9%
Est. 2015 33,294 0.0%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013

2010 census

The 2010 census recorded a population of 33,309 in the county, with a population density of 60.1018/sq mi (23.2054/km2). There were 13,914 housing units, of which 12,723 were occupied.

2000 census

USA Marion County, Iowa age pyramid
2000 Census Age Pyramid for Marion County

As of the census of 2000, there were 32,052 people, 12,017 households, and 8,532 families residing in the county. The population density was 58 people per square mile (22/km²). There were 12,755 housing units at an average density of 23 per square mile (9/km²). The racial makeup of the county was 97.46% White, 0.42% Black or African American, 0.19% Native American, 1.03% Asian, 0.04% Pacific Islander, 0.22% from other races, and 0.64% from two or more races. 0.80% of the population were Hispanic or Latino of any race.

There were 12,017 households out of which 33.00% had children under the age of 18 living with them, 61.20% were married couples living together, 6.90% had a female householder with no husband present, and 29.00% were non-families. 25.60% of all households were made up of individuals and 11.90% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.02.

In the county, the population was spread out with 25.30% under the age of 18, 10.20% from 18 to 24, 26.50% from 25 to 44, 22.10% from 45 to 64, and 15.90% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 98.60 males. For every 100 females age 18 and over, there were 95.80 males.

The median income for a household in the county was $42,401, and the median income for a family was $50,052. Males had a median income of $36,460 versus $25,573 for females. The per capita income for the county was $18,717. About 5.20% of families and 7.60% of the population were below the poverty line, including 8.70% of those under age 18 and 10.80% of those age 65 or over.

Red Rock Lake and Dam Iowa
Red Rock Lake and Dam in Marion County near Pella. Elk Rock State Park is situated on both sides of the lake to the northwest. County road T15 crosses over the dam.

Communities

Cities

Unincorporated communities

Population ranking

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

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Pella City 10,352
2 Knoxville City 7,313
3 Pleasantville City 1,694
4 Melcher-Dallas City 1,288
5 Bussey City 422
6 Harvey City 235
7 Hamilton City 130
8 Swan City 72
9 Marysville City 66

Gallery


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