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Decatur County, Iowa Population 2021
Decatur County, Iowa's estimated population is 7,830 with a growth rate of -0.25% in the past year according to the most recent United States census data. Decatur County, Iowa is the 87th largest county inIowa. The 2010 Population was 8,418 and has seen a growth of -6.99% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 7,830 | -20 | -0.25% |
| 2020 | 7,850 | -20 | -0.25% |
| 2019 | 7,870 | -20 | -0.25% |
| 2018 | 7,890 | -57 | -0.72% |
| 2017 | 7,947 | -106 | -1.32% |
| 2016 | 8,053 | -84 | -1.03% |
| 2015 | 8,137 | -72 | -0.88% |
| 2014 | 8,209 | -7 | -0.09% |
| 2013 | 8,216 | -23 | -0.28% |
| 2012 | 8,239 | -10 | -0.12% |
| 2011 | 8,249 | -169 | -2.01% |
| 2010 | 8,418 | 80 | 0.96% |
| 1990 | 8,338 | -1,456 | -14.87% |
| 1980 | 9,794 | 57 | 0.59% |
| 1970 | 9,737 | -802 | -7.61% |
| 1960 | 10,539 | -2,062 | -16.36% |
| 1950 | 12,601 | -1,411 | -10.07% |
| 1940 | 14,012 | -891 | -5.98% |
| 1930 | 14,903 | -1,663 | -10.04% |
| 1920 | 16,566 | 219 | 1.34% |
| 1910 | 16,347 | -1,768 | -9.76% |
| 1900 | 18,115 | 2,472 | 15.80% |
| 1890 | 15,643 | 307 | 2.00% |
| 1880 | 15,336 | 3,318 | 27.61% |
| 1870 | 12,018 | 3,341 | 38.50% |
| 1860 | 8,677 | 7,712 | 799.17% |
| 1850 | 965 | 0.00% |
2021 Growth Rate
-0.25% (-20)
County Website
State
Founded
1846
County Seat
Lat./Long.
2010 Population
8,418
Growth Since 2010
-6.99% (-588)
| Race | Population | Percentage |
|---|---|---|
| White | 7,552 | 94.65% |
| Two or More Races | 141 | 1.77% |
| Black or African American | 141 | 1.77% |
| Asian | 59 | 0.74% |
| Some Other Race | 37 | 0.46% |
| Native Hawaiian and Other Pacific Islander | 25 | 0.31% |
| American Indian and Alaska Native | 24 | 0.30% |
Decatur County, Iowa Population Pyramid $2021
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| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 3,200 | 2.25 | 67 |
| Married | 1,671 | 2.94 | 84.5 |
| Non Family | 1,181 | 1.15 | 47.7 |
| Female | 263 | 2.91 | 51.3 |
| Male | 85 | 2.16 | 41.2 |
2.84
Average Family Size
2.25
Average Household Size
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 183 | 3.78% |
| 9th to 12th Grade | 346 | 7.15% |
| High School Graduate | 1,813 | 37.46% |
| Some College | 929 | 19.19% |
| Associates Degree | 357 | 7.38% |
| Bachelors Degree | 697 | 14.40% |
| Graduate Degree | 515 | 10.64% |
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Decatur County, Iowa Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 4,610 | 4,135 | 1,143 |
| Hispanic | 73 | 57 | 10 |
| 2+ Races | 58 | 56 | 29 |
| Asian | 49 | 43 | 6 |
| Black | 30 | 24 | 24 |
| Native American | 24 | ||
| Other Race | 10 | 10 | |
| Islander | 9 | 9 | 6 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among black people with a rate of 80.00%.
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$34,274
Average Earnings
$40,406
Average Male
$26,904
Average Female
Decatur County, Iowa Language by Age
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Decatur County, Iowa Language
94.07% of Decatur County, Iowa residents speak only English, while 5.93% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 4.05% of the population.
Decatur County, Iowa Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 6,815 | 1,220 | 17.90% |
| Hispanic | 172 | 43 | 25.00% |
| Multiple | 132 | 31 | 23.48% |
| Native | 24 | 24 | 100.00% |
| Asian | 43 | 16 | 37.21% |
| Black | 58 | 11 | 18.97% |
| Islander | 25 | 3 | 12.00% |
| Other | 24 | 2 | 8.33% |
18.42%
Overall Poverty Rate
18.93%
Male Poverty Rate
17.91%
Female Poverty Rate
Poverty in Decatur County, Iowa
The race most likely to be in poverty in Decatur County, Iowa is Native, with 100.00% below the poverty level.
The race least likely to be in poverty in Decatur County, Iowa is Other, with 8.33% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 4.90%. Among those working part-time, it was 30.49%, and for those that did not work, the poverty rate was 22.34%.
Decatur County, Iowa Marital Status
Marriage Rates
53.0%
Overall Marriage Rate
53.3%
Male Marriage Rate
52.6%
Female Marriage Rate
Decatur County, Iowa Married by Age and Sex
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Decatur County, Iowa Marriage
The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 55-64.
Decatur County, Iowa Marital Status by Race
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| Name | Veterans | % of Total |
|---|---|---|
| White | 400 | 6.77% |
| 2+ Races | 17 | 22.08% |
| Hispanic | 4 | 2.29% |
| Asian | 4 | 6.78% |
Decatur County, Iowa Veterans by Education
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10.12%
Veteran Poverty Rate
39.52%
Veteran Disability Rate
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60.2%
Labor Force Participation
57.3%
Employment Rate
4.8%
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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65.11%
Born in Decatur County, Iowa
97.62%
Native Born
2.38%
Foreign Born
1.69%
Non Citizen
0.69%
Naturalized
Place of Birth
97.62% of Decatur County, Iowa residents were born in the United States, with 65.11% having been born in Iowa. 1.69% 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