Decatur County, Iowa Population 2022

Decatur County, Iowa's estimated population is 7,810 with a growth rate of -0.26% in the past year according to the most recent United States census data. Decatur County, Iowa is the 87th largest county in Iowa. The 2010 Population was 8,418 and has seen a growth of -7.22% since this time.

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
18509650.00%
18608,6777,712799.17%
187012,0183,34138.50%
188015,3363,31827.61%
189015,6433072.00%
190018,1152,47215.80%
191016,347-1,768-9.76%
192016,5662191.34%
193014,903-1,663-10.04%
194014,012-891-5.98%
195012,601-1,411-10.07%
196010,539-2,062-16.36%
19709,737-802-7.61%
19809,794570.59%
19908,338-1,456-14.87%
20108,418800.96%
20118,249-169-2.01%
20128,239-10-0.12%
20138,216-23-0.28%
20148,209-7-0.09%
20158,137-72-0.88%
20168,053-84-1.03%
20177,947-106-1.32%
20187,890-57-0.72%
20197,870-20-0.25%
20207,850-20-0.25%
20217,830-20-0.25%
20227,810-20-0.26%
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Decatur County, Iowa Population Growth

Population by Race

Race Population Percentage
White7,45194.22%
Black or African American961.21%
Asian750.95%
Native Hawaiian and Other Pacific Islander140.18%
Some Other Race340.43%
Two or More Races2383.01%
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Decatur County, Iowa Population by Race

Decatur County, Iowa Population Pyramid 2022

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Decatur County, Iowa Median Age

36


Total

34.3


Male

38.3


Female

Decatur County, Iowa Adults

There are 6,196 adults, (1,604 of whom are seniors) in Decatur County, Iowa.

Decatur County, Iowa Age Dependency

Age Dependency Ratio

34.9

Old Age Dependency Ratio

37.3

Child Dependency Ratio

Decatur County, Iowa Sex Ratio

Female

3,933

49.73%

Male

3,975

50.27%

Decatur County, Iowa Population by Age

Decatur County, Iowa Renter vs Owner Occupied by Household Type

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Decatur County, Iowa Household Types

Type Owner Renter
Married84.6%15.4%
All64.6%35.4%
Female60.1%39.9%
Male51.4%48.6%
Non Family38.6%61.4%

64.6%

Rate of Home Ownership

Decatur County, Iowa Households and Families

Type Count Average Size Owned
All3,2422.2264.6
Married1,6832.8984.6
Male742.2251.4
Female2762.6360.1
Non Family1,2091.1938.6

2.76

Average Family Size

2.22

Average Household Size

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Decatur County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1783.68%
9th to 12th Grade3156.51%
High School Graduate1,83037.85%
Some College86017.79%
Associates Degree3707.65%
Bachelors Degree70214.52%
Graduate Degree58012.00%
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Decatur County, Iowa Educational Attainment by Sex (over 25)

Decatur County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
Black231818
Islander885
2+ Races12610042
White4,5464,1001,203
Asian605512
Other Race13131
Hispanic80686

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 78.26%.

Decatur County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$34,276$40,550$27,127
Less Than 9th Grade$19,957$35,000$17,986
High School Graduate$26,791$35,699$19,327
Some College$34,338$45,822$30,326
Bachelors Degree$36,814$51,058$34,327
Graduate Degree$50,486$55,000$48,646

$34,276

Average Earnings

$40,550

Average Male

$27,127

Average Female

Decatur County, Iowa Earnings by Educational Attainment

Decatur County, Iowa Language by Age

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Decatur County, Iowa Language

95.46% of Decatur County, Iowa residents speak only English, while 4.54% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.74% of the population.

Decatur County, Iowa Language

Decatur County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
Multiple2308737.83%
Black42921.43%
Asian561221.43%
White6,6941,00515.01%
Islander14214.29%
Other11NaN%
Hispanic1752112.00%

15.83%

Overall Poverty Rate

17.04%

Male Poverty Rate

14.62%

Female Poverty Rate

Poverty in Decatur County, Iowa

The race most likely to be in poverty in Decatur County, Iowa is Multiple, with 37.83% below the poverty level.

The race least likely to be in poverty in Decatur County, Iowa is Hispanic, with 12.00% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.81%. Among those working part-time, it was 25.77%, and for those that did not work, the poverty rate was 21.36%.

Decatur County, Iowa Poverty

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Name Poverty
Less Than 9th Grade28.09%
High School15.12%
Some College10.87%
Bachelors or Greater4.29%

Decatur County, Iowa Poverty Rate by Education

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Rate Poverty
Male Employed12.31%
Male Unemployed23.44%
Female Employed9.97%
Female Unemployed18.42%

Decatur County, Iowa Poverty Rate by Employment Status and Sex

Decatur County, Iowa Income by Household Type

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Name Median Mean
Households$48,154$58,566
Families$57,926$68,210
Married Families$63,586-
Non Families$25,701$39,981
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Income by Household Type

Decatur County, Iowa Marital Status

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Marriage Rates

53.7%

Overall Marriage Rate

53.3%

Male Marriage Rate

54.0%

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 35-44.

Decatur County, Iowa Marital Status by Race

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Decatur County, Iowa Marital Status

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437

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War44
First Gulf War51
Vietnam185
Korea45
World War II45

Decatur County, Iowa Veterans by War

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Age Group Veterans
18 to 3414
35 to 5461
55 to 6454
65 to 74162
75+146

Decatur County, Iowa Veterans by Age

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Name Veterans % of Total
White3766.48%
Asian11.33%
2+ Races6032.61%
Hispanic10.56%

Decatur County, Iowa Veterans by Race

Decatur County, Iowa Veterans by Education

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12.50%

Veteran Poverty Rate

43.52%

Veteran Disability Rate

Decatur County, Iowa Veterans by Education

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59.5%

Labor Force Participation

57.1%

Employment Rate

4%

Unemployment Rate

Decatur County, Iowa Employment by Age

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Decatur County, Iowa Employment by Race

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Decatur County, Iowa Employment by Education

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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66.44%

Born in Decatur County, Iowa

97.62%

Native Born

2.38%

Foreign Born

1.66%

Non Citizen

0.72%

Naturalized

Place of Birth

97.62% of Decatur County, Iowa residents were born in the United States, with 66.44% having been born in Iowa. 1.66% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Decatur County, Iowa Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources