Marion County
County
Marion County Courthouse in Knoxville
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
 (2020)
 • Total33,414
 • Density59/sq mi (23/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.marioncountyiowa.gov

Marion County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 33,414.[1] The county seat is Knoxville.[2] It is named for Francis Marion, a brigadier general from South Carolina in the American Revolutionary War.[3]

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.[4]

Major highways

Adjacent counties

Demographics

Historical population
CensusPop.Note%±
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[5]
1790-1960[6] 1900-1990[7]
1990-2000[8] 2010-2018[9]
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.[1]

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.[10]

2000 census

2000 Census Age Pyramid for Marion County

As of the census[11] 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 people/km2). There were 12,755 housing units at an average density of 23 units per square mile (8.9 units/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.[1]

† county seat

Rank City/Town/etc. Municipal type Population (2020 Census)
1 Pella City 10,464
2 † Knoxville City 7,595
3 Pleasantville 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

Politics

United States presidential election results for Marion County, Iowa[12]
Year Republican Democratic Third party
No. %No. %No. %
2020 12,663 65.84% 6,178 32.12% 391 2.03%
2016 10,962 61.53% 5,482 30.77% 1,372 7.70%
2012 9,828 55.57% 7,507 42.44% 352 1.99%
2008 9,256 54.34% 7,421 43.57% 355 2.08%
2004 9,990 59.83% 6,574 39.37% 132 0.79%
2000 8,358 58.01% 5,741 39.85% 309 2.14%
1996 6,100 46.74% 5,978 45.80% 974 7.46%
1992 6,062 44.79% 5,531 40.87% 1,940 14.34%
1988 5,914 45.65% 6,922 53.44% 118 0.91%
1984 7,259 53.24% 6,313 46.30% 62 0.45%
1980 6,665 49.30% 5,490 40.61% 1,363 10.08%
1976 5,429 45.79% 6,226 52.51% 202 1.70%
1972 6,583 57.09% 4,643 40.27% 305 2.65%
1968 5,791 52.35% 4,618 41.75% 653 5.90%
1964 3,903 32.96% 7,911 66.80% 28 0.24%
1960 7,444 61.99% 4,547 37.87% 17 0.14%
1956 6,830 56.13% 5,316 43.69% 22 0.18%
1952 7,165 57.25% 5,196 41.51% 155 1.24%
1948 4,312 39.67% 6,300 57.96% 258 2.37%
1944 4,874 42.99% 6,365 56.14% 99 0.87%
1940 5,763 45.19% 6,915 54.22% 75 0.59%
1936 4,975 41.51% 6,745 56.27% 266 2.22%
1932 3,695 33.49% 7,067 64.05% 272 2.47%
1928 6,225 59.36% 4,113 39.22% 149 1.42%
1924 5,058 47.65% 2,383 22.45% 3,174 29.90%
1920 5,435 56.62% 3,861 40.22% 303 3.16%
1916 2,459 42.90% 3,094 53.98% 179 3.12%
1912 1,191 22.66% 2,276 43.31% 1,788 34.02%
1908 2,625 46.12% 2,739 48.12% 328 5.76%
1904 2,988 53.05% 2,202 39.10% 442 7.85%
1900 2,950 48.53% 2,950 48.53% 179 2.94%
1896 2,741 46.05% 3,119 52.40% 92 1.55%
1892 2,319 43.70% 2,540 47.86% 448 8.44%
1888 2,374 47.30% 2,322 46.26% 323 6.44%
1884 2,356 47.27% 2,593 52.03% 35 0.70%
1880 2,452 47.46% 1,520 29.42% 1,194 23.11%

See also

References

  1. 1 2 3 "2020 Census State Redistricting Data". census.gov. United states Census Bureau. Retrieved August 12, 2021.
  2. ↑ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ↑ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. U.S. Government Printing Office. p. 200.
  4. ↑ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  5. ↑ "U.S. Decennial Census". United States Census Bureau. Retrieved July 20, 2014.
  6. ↑ "Historical Census Browser". University of Virginia Library. Retrieved July 20, 2014.
  7. ↑ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 20, 2014.
  8. ↑ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on March 27, 2010. Retrieved July 20, 2014.
  9. ↑ "State & County QuickFacts". United States Census Bureau. Archived from the original on June 7, 2011. Retrieved July 20, 2014.
  10. ↑ "Population & Housing Occupancy Status 2010" (PDF). United States Census Bureau American FactFinder. Archived (PDF) from the original on October 16, 2020. Retrieved August 15, 2022.
  11. ↑ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
  12. ↑ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 27, 2018.
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