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Polk County, Iowa Population 2021
Polk County, Iowa's estimated population is 498,817 with a growth rate of 0.88% in the past year according to the most recent United States census data. Polk County, Iowa is the 2nd largest county inIowa. The 2010 Population was 432,352 and has seen a growth of 15.37% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 498,817 | 4,328 | 0.88% |
| 2020 | 494,489 | 4,328 | 0.88% |
| 2019 | 490,161 | 4,328 | 0.89% |
| 2018 | 485,833 | 5,346 | 1.11% |
| 2017 | 480,487 | 6,210 | 1.31% |
| 2016 | 474,277 | 6,973 | 1.49% |
| 2015 | 467,304 | 6,406 | 1.39% |
| 2014 | 460,898 | 8,241 | 1.82% |
| 2013 | 452,657 | 7,986 | 1.80% |
| 2012 | 444,671 | 5,934 | 1.35% |
| 2011 | 438,737 | 6,385 | 1.48% |
| 2010 | 432,352 | 105,212 | 32.16% |
| 1990 | 327,140 | 23,970 | 7.91% |
| 1980 | 303,170 | 17,069 | 5.97% |
| 1970 | 286,101 | 19,786 | 7.43% |
| 1960 | 266,315 | 40,305 | 17.83% |
| 1950 | 226,010 | 30,175 | 15.41% |
| 1940 | 195,835 | 22,998 | 13.31% |
| 1930 | 172,837 | 18,808 | 12.21% |
| 1920 | 154,029 | 43,591 | 39.47% |
| 1910 | 110,438 | 27,814 | 33.66% |
| 1900 | 82,624 | 17,214 | 26.32% |
| 1890 | 65,410 | 23,015 | 54.29% |
| 1880 | 42,395 | 14,538 | 52.19% |
| 1870 | 27,857 | 16,232 | 139.63% |
| 1860 | 11,625 | 7,112 | 157.59% |
| 1850 | 4,513 | 0.00% |
2021 Growth Rate
0.88% (4,328)
County Website
State
Founded
1846
County Seat
Lat./Long.
2010 Population
432,352
Growth Since 2010
15.37% (66,465)
| Race | Population | Percentage |
|---|---|---|
| White | 402,987 | 84.02% |
| Black or African American | 32,518 | 6.78% |
| Asian | 21,909 | 4.57% |
| Two or More Races | 13,774 | 2.87% |
| Some Other Race | 6,456 | 1.35% |
| American Indian and Alaska Native | 1,530 | 0.32% |
| Native Hawaiian and Other Pacific Islander | 438 | 0.09% |
Polk County, Iowa Population Pyramid $2021
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| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 187,798 | 2.51 | 67.1 |
| Married | 87,285 | 3.18 | 85.5 |
| Non Family | 70,351 | 1.3 | 50.4 |
| Female | 21,554 | 3.39 | 48.5 |
| Male | 8,608 | 3.29 | 63.9 |
3.13
Average Family Size
2.51
Average Household Size
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 11,942 | 3.75% |
| 9th to 12th Grade | 15,025 | 4.72% |
| High School Graduate | 77,802 | 24.46% |
| Some College | 64,942 | 20.42% |
| Associates Degree | 31,572 | 9.93% |
| Bachelors Degree | 81,079 | 25.49% |
| Graduate Degree | 35,670 | 11.22% |
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Polk County, Iowa Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 263,331 | 251,067 | 105,187 |
| Hispanic | 18,948 | 11,611 | 2,276 |
| Black | 17,981 | 15,143 | 3,478 |
| Asian | 13,868 | 9,746 | 4,428 |
| 2+ Races | 3,976 | 3,420 | 1,313 |
| Other Race | 3,426 | 1,796 | 289 |
| Native American | 860 | 674 | 153 |
| Islander | 276 | 212 | 103 |
The highest rate of high school graduation is among white people with a rate of 95.34%.
The highest rate of bachelors degrees is among white people with a rate of 39.94%.
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$44,147
Average Earnings
$51,492
Average Male
$37,320
Average Female
Polk County, Iowa Language by Age
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Polk County, Iowa Language
86.71% of Polk County, Iowa residents speak only English, while 13.29% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.72% of the population.
Polk County, Iowa Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 366,260 | 26,801 | 7.32% |
| Black | 31,529 | 8,533 | 27.06% |
| Hispanic | 39,518 | 8,358 | 21.15% |
| Multiple | 13,425 | 3,386 | 25.22% |
| Asian | 21,758 | 2,554 | 11.74% |
| Other | 6,405 | 1,318 | 20.58% |
| Native | 1,446 | 205 | 14.18% |
| Islander | 438 | 161 | 36.76% |
10.40%
Overall Poverty Rate
9.54%
Male Poverty Rate
11.23%
Female Poverty Rate
Poverty in Polk County, Iowa
The race most likely to be in poverty in Polk County, Iowa is Islander, with 36.76% below the poverty level.
The race least likely to be in poverty in Polk County, Iowa is White, with 7.32% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.09%. Among those working part-time, it was 16.13%, and for those that did not work, the poverty rate was 18.87%.
Polk County, Iowa Marital Status
Marriage Rates
48.9%
Overall Marriage Rate
50.5%
Male Marriage Rate
47.3%
Female Marriage Rate
Polk County, Iowa Married by Age and Sex
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Polk County, Iowa Marriage
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.
Polk County, Iowa Marital Status by Race
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| Name | Veterans | % of Total |
|---|---|---|
| White | 22,013 | 7.09% |
| Black | 760 | 3.54% |
| Hispanic | 570 | 2.41% |
| Asian | 228 | 1.42% |
| 2+ Races | 177 | 3.07% |
| Native American | 135 | 12.15% |
| Other Race | 100 | 2.30% |
| Islander | 34 | 12.32% |
Polk County, Iowa Veterans by Education
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6.49%
Veteran Poverty Rate
28.12%
Veteran Disability Rate
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72.2%
Labor Force Participation
69%
Employment Rate
4.2%
Unemployment Rate
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Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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68.68%
Born in Polk County, Iowa
90.95%
Native Born
9.05%
Foreign Born
5.22%
Non Citizen
3.83%
Naturalized
Place of Birth
90.95% of Polk County, Iowa residents were born in the United States, with 68.68% having been born in Iowa. 5.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990