Marion County, Iowa

Marion County
Marion County Courthouse in Knoxville
Map of Iowa highlighting Marion County
Location within the U.S. state of Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
Coordinates: 41°19′52″N 93°06′08″W / 41.331111111111°N 93.102222222222°W / 41.331111111111; -93.102222222222
Country United States
State Iowa
Founded1845
Named forFrancis Marion
SeatKnoxville
Largest cityPella
Area
 • Total571 sq mi (1,480 km2)
 • Land555 sq mi (1,440 km2)
 • Water16 sq mi (40 km2)  2.8%
Population
 • Total33,414
 • Density59/sq mi (23/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.co.marion.ia.us

Marion County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 33,414. 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

Adjacent counties

Demographics

Historical population
Census Pop.
18505,482
186016,813206.7%
187024,43645.3%
188025,1112.8%
189023,058−8.2%
190024,1594.8%
191022,995−4.8%
192024,9578.5%
193025,7273.1%
194027,0195.0%
195025,930−4.0%
196025,886−0.2%
197026,3521.8%
198029,66912.6%
199030,0011.1%
200032,0526.8%
201033,3093.9%
202033,4140.3%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2018
Population of Marion County from US census data

2020 census

The 2020 census recorded a population of 33,414 in the county, with a population density of 58.4743/sq mi (22.5770/km2). 96.24% of the population reported being of one race. 91.15% were non-Hispanic White, 0.87% were Black, 2.09% were Hispanic, 0.21% were Native American, 1.20% were Asian, 0.06% were Native Hawaiian or Pacific Islander and 4.41% were some other race or more than one race. There were 14,073 housing units, of which 13,145 were occupied.

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

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.

Communities

Cities

Unincorporated communities

Townships

  • Clay
  • Dallas
  • Franklin
  • Indiana
  • Knoxville
  • Lake Prairie
  • Liberty
  • Pleasant Grove
  • Red Rock
  • Summit
  • Union
  • Washington

Population ranking

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.

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

county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Pella City 10,464
2 Knoxville City 7,595
3 Pleasantville (partially in Warren County) City 1,676
4 Melcher-Dallas City 1,195
5 Bussey City 387
6 Harvey City 236
7 Hamilton City 119
8 Swan City 76
9 Marysville City 44

Gallery

Politics

Presidential Elections Results
Presidential Elections Results
Year Republican Democratic Third Parties
2020 65.8% 12,663 32.1% 6,178 2.0% 391
2016 61.5% 10,962 30.8% 5,482 7.7% 1,372
2012 55.6% 9,828 42.4% 7,507 2.0% 352
2008 54.3% 9,256 43.6% 7,421 2.1% 355
2004 59.8% 9,990 39.4% 6,574 0.8% 132
2000 58.0% 8,358 39.9% 5,741 2.1% 309
1996 46.7% 6,100 45.8% 5,978 7.5% 974
1992 44.8% 6,062 40.9% 5,531 14.3% 1,940
1988 45.7% 5,914 53.4% 6,922 0.9% 118
1984 53.2% 7,259 46.3% 6,313 0.5% 62
1980 49.3% 6,665 40.6% 5,490 10.1% 1,363
1976 45.8% 5,429 52.5% 6,226 1.7% 202
1972 57.1% 6,583 40.3% 4,643 2.7% 305
1968 52.4% 5,791 41.8% 4,618 5.9% 653
1964 33.0% 3,903 66.8% 7,911 0.2% 28
1960 62.0% 7,444 37.9% 4,547 0.1% 17
1956 56.1% 6,830 43.7% 5,316 0.2% 22
1952 57.3% 7,165 41.5% 5,196 1.2% 155
1948 39.7% 4,312 58.0% 6,300 2.4% 258
1944 43.0% 4,874 56.1% 6,365 0.9% 99
1940 45.2% 5,763 54.2% 6,915 0.6% 75
1936 41.5% 4,975 56.3% 6,745 2.2% 266
1932 33.5% 3,695 64.1% 7,067 2.5% 272
1928 59.4% 6,225 39.2% 4,113 1.4% 149
1924 47.7% 5,058 22.5% 2,383 29.9% 3,174
1920 56.6% 5,435 40.2% 3,861 3.2% 303
1916 42.9% 2,459 54.0% 3,094 3.1% 179
1912 22.7% 1,191 43.3% 2,276 34.0% 1,788
1908 46.1% 2,625 48.1% 2,739 5.8% 328
1904 53.1% 2,988 39.1% 2,202 7.8% 442
1900 48.5% 2,950 48.5% 2,950 2.9% 179
1896 46.1% 2,741 52.4% 3,119 1.6% 92

See also

Coordinates: 41°19′52″N 93°06′08″W / 41.33111°N 93.10222°W / 41.33111; -93.10222


This page was last updated at 2021-11-20 14:25 UTC. Update now. View original page.

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