Marion County, Iowa demographics
Population: 33,381
Median age: 39.6
Median household income: 66,822
Demographics, population, home values, social and economic characteristics of Marion County, Iowa.
Population
| 2021 | 33,381 |
| 2020 | 33,193 |
| 2019 | 33,172 |
| 2018 | 33,207 |
| 2017 | 33,127 |
| 2016 | 33,197 |
| 2015 | 33,248 |
| 2014 | 33,308 |
| 2013 | 33,318 |
| 2012 | 33,388 |
| 2011 | 33,372 |
| 2010 | 33,378 |
| 2009 | 32,650 |
Marion County, IA cities
Bussey city - 426
Hamilton city - 90
Harvey city - 174
Knoxville city - 7,537
Marysville city - 29
Melcher-Dallas city - 1,213
Pella city - 10,414
Pleasantville city - 1,888
Swan city - 49
Census data for Marion County, Iowa
Demographic and housing estimates in Marion County, Iowa
| Total population | 33,381 |
| Male | 16,832 |
| Female | 16,549 |
| Total population | 33,381 |
| Under 5 years | 1,885 |
| 5 to 9 years | 1,860 |
| 10 to 14 years | 2,649 |
| 15 to 19 years | 2,585 |
| 20 to 24 years | 2,271 |
| 25 to 34 years | 3,550 |
| 35 to 44 years | 4,051 |
| 45 to 54 years | 4,070 |
| 55 to 59 years | 2,134 |
| 60 to 64 years | 2,387 |
| 65 to 74 years | 3,357 |
| 75 to 84 years | 1,662 |
| 85 years and over | 920 |
| Median age (years) | 39.6 |
| Under 18 years | 7,829 |
| 16 years and over | 26,405 |
| 18 years and over | 25,552 |
| 21 years and over | 23,798 |
| 62 years and over | 7,410 |
| 65 years and over | 5,939 |
| Total population | 33,381 |
| One race | 32,705 |
| White | 31,655 |
| Black or African American | 325 |
| American Indian and Alaska Native | 27 |
| Asian | 400 |
| Native Hawaiian and Other Pacific Islander | 9 |
| Some other race | 289 |
| Two or more races | 676 |
| Citizen, VOTING AGE 18 and over population | 25,291 |
| Male Citizen, VOTING AGE 18 and over population | 12,631 |
| Female Citizen, VOTING AGE 18 and over population | 12,660 |
Social characteristics in Marion County, Iowa
| Total households | 13,241 |
| Family households (families) | 7,743 |
| Married-couple family | 735 |
| Male householder, no wife present, family | 2,021 |
| Female householder, no husband present, family | 1,549 |
| Nonfamily households | 2,742 |
| Average household size | 4,057 |
| Average family size | 2.40 |
Economic characteristics in Marion County, Iowa
| Total households | 13,241 |
| Less than $10,000 | 547 |
| $10,000 to $14,999 | 486 |
| $15,000 to $24,999 | 951 |
| $25,000 to $34,999 | 996 |
| $35,000 to $49,999 | 1,414 |
| $50,000 to $74,999 | 3,015 |
| $75,000 to $99,999 | 1,890 |
| $100,000 to $149,999 | 2,338 |
| $150,000 to $199,999 | 860 |
| $200,000 or more | 744 |
| Median household income (dollars) | 66,822 |
Housing characteristics in Marion County, Iowa
| Total housing units | 14,068 |
| Occupied housing units | 13,241 |
| Vacant housing units | 827 |
| Total housing units | 14,068 |
| 1-unit, detached | 10,879 |
| 1-unit, attached | 248 |
| 2 units | 454 |
| 3 or 4 units | 394 |
| 5 to 9 units | 481 |
| 10 to 19 units | 450 |
| 20 or more units | 403 |
| Mobile home | 753 |
| Boat, RV, van, etc. | 6 |
| Total housing units | 14,068 |
| Built 2014 or later | 1 |
| Built 2010 to 2013 | 843 |
| Built 2000 to 2009 | 1,610 |
| Built 1990 to 1999 | 1,782 |
| Built 1980 to 1989 | 1,158 |
| Built 1970 to 1979 | 2,506 |
| Built 1960 to 1969 | 1,430 |
| Built 1950 to 1959 | 1,104 |
| Built 1940 to 1949 | 651 |
| Built 1939 or earlier | 2,983 |
| Total housing units | 14,068 |
| 1 room | 193 |
| 2 rooms | 357 |
| 3 rooms | 856 |
| 4 rooms | 2,075 |
| 5 rooms | 2,338 |
| 6 rooms | 2,290 |
| 7 rooms | 1,792 |
| 8 rooms | 1,365 |
| 9 rooms or more | 2,802 |
| Median rooms | 6.0 |
| Total housing units | 14,068 |
| No bedroom | 206 |
| 1 bedroom | 989 |
| 2 bedrooms | 3,704 |
| 3 bedrooms | 5,701 |
| 4 bedrooms | 2,552 |
| 5 or more bedrooms | 916 |
| Occupied housing units | 13,241 |
| Owner-occupied | 9,996 |
| Renter-occupied | 3,245 |
| Average household size of owner-occupied unit | 2.54 |
| Average household size of renter-occupied unit | 1.97 |
| Occupied housing units | 13,241 |
| Moved in 2017 or later | 1,256 |
| Moved in 2015 to 2016 | 3,651 |
| Moved in 2010 to 2014 | 2,338 |
| Moved in 2000 to 2009 | 2,904 |
| Moved in 1990 to 1999 | 1,360 |
| Moved in 1989 and earlier | 1,732 |
| Owner-occupied units | 9,996 |
| Less than $50,000 | 849 |
| $50,000 to $99,999 | 1,912 |
| $100,000 to $149,999 | 1,772 |
| $150,000 to $199,999 | 1,446 |
| $200,000 to $299,999 | 2,491 |
| $300,000 to $499,999 | 1,227 |
| $500,000 to $999,999 | 248 |
| $1,000,000 or more | 51 |
| Median (dollars) | 163,500 |
| Owner-occupied units | 9,996 |
| Housing units with a mortgage | 5,871 |
| Housing units without a mortgage | 4,125 |
| Occupied units paying rent | 3,074 |
| Less than $500 | 380 |
| $500 to $999 | 1,961 |
| $1,000 to $1,499 | 537 |
| $1,500 to $1,999 | 141 |
| $2,000 to $2,499 | 24 |
| $2,500 to $2,999 | 31 |
| $3,000 or more | 0 |
| Median (dollars) | 767 |
| No rent paid | 171 |
Demographic data for Marion County, IA and each city in the county. Lists of cities by population, wealth and poverty in Marion County, IA.
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