Clayton County, Iowa Population 2021

Clayton County, Iowa's estimated population is 17,567 with a growth rate of 0.05% in the past year according to the most recent United States census data. Clayton County, Iowa is the 41st largest county inIowa. The 2010 Population was 18,080 and has seen a growth of -2.84% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
202117,56790.05%
202017,55890.05%
201917,54990.05%
201817,540-108-0.61%
201717,648-13-0.07%
201617,661-65-0.37%
201517,726-42-0.24%
201417,768-25-0.14%
201317,793-153-0.85%
201217,946-71-0.39%
201118,017-63-0.35%
201018,080-974-5.11%
199019,054-2,044-9.69%
198021,0984922.39%
197020,606-1,356-6.17%
196021,962-560-2.49%
195022,522-1,812-7.45%
194024,334-225-0.92%
193024,559-473-1.89%
192025,032-544-2.13%
191025,576-2,174-7.83%
190027,7501,0173.80%
189026,733-2,096-7.27%
188028,8291,0583.81%
187027,7717,04333.98%
186020,72816,855435.19%
18503,8732,772251.77%
18401,1010.00%
2021 Growth Rate
0.05% (9)
County Website
State
Founded
1837
County Seat
2010 Population
18,080
Growth Since 2010
-2.84% (-513)
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Clayton County, Iowa Population Growth

Population by Race

Race Population Percentage
White17,17397.44%
Black or African American1700.96%
Two or More Races1140.65%
Asian790.45%
Some Other Race560.32%
American Indian and Alaska Native330.19%
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Clayton County, Iowa Population by Race

Clayton County, Iowa Population Pyramid $2021

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Clayton County, Iowa Median Age

47.3


Total

45.9


Male

48.4


Female

Clayton County, Iowa Adults

There are 13,867 adults, (4,045 of whom are seniors) in Clayton County, Iowa.

Clayton County, Iowa Age Dependency

79.4

Age Dependency Ratio

41.2

Old Age Dependency Ratio

38.3

Child Dependency Ratio

Clayton County, Iowa Sex Ratio

Female

8,679

49.24%

Male

8,946

50.76%

Clayton County, Iowa Population by Age

Clayton County, Iowa Renter vs Owner Occupied by Household Type

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Clayton County, Iowa Household Types

Type Owner Renter
Non Family59.2%40.8%
Female62.1%37.9%
All74.5%25.5%
Male78.9%21.1%
Married87.5%12.5%

74.5%

Rate of Home Ownership

Clayton County, Iowa Households and Families

Type Count Average Size Owned
All7,5102.374.5
Married3,7982.987.5
Non Family2,8651.2859.2
Female5433.0162.1
Male3043.2678.9

2.86

Average Family Size

2.3

Average Household Size

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Clayton County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade4903.86%
9th to 12th Grade7896.21%
High School Graduate5,49243.21%
Some College2,35918.56%
Associates Degree1,32910.46%
Bachelors Degree1,74013.69%
Graduate Degree5104.01%
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Clayton County, Iowa Educational Attainment by Sex (over 25)

Clayton County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
White12,27411,2492,217
Hispanic1801056
Black14917
Asian614227
Other Race5035
2+ Races4017
Native American1510

The highest rate of high school graduation is among white people with a rate of 91.65%.

The highest rate of bachelors degrees is among asian people with a rate of 44.26%.

Clayton County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$33,036$41,596$25,844
Less Than 9th Grade$20,682$23,125$19,201
High School Graduate$29,964$38,851$21,694
Some College$36,720$43,952$28,574
Bachelors Degree$38,563$55,507$29,154
Graduate Degree$59,375$68,125$54,348

$33,036

Average Earnings

$41,596

Average Male

$25,844

Average Female

Clayton County, Iowa Earnings by Educational Attainment

Clayton County, Iowa Language by Age

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Clayton County, Iowa Language

93.97% of Clayton County, Iowa residents speak only English, while 6.03% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.58% of the population.

Clayton County, Iowa Language

Clayton County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
White16,5891,68910.18%
Hispanic33917050.15%
Black16411469.51%
Multiple1051716.19%
Asian7933.80%
Native3339.09%

11.53%

Overall Poverty Rate

11.38%

Male Poverty Rate

11.67%

Female Poverty Rate

Poverty in Clayton County, Iowa

The race most likely to be in poverty in Clayton County, Iowa is Black, with 69.51% below the poverty level.

The race least likely to be in poverty in Clayton County, Iowa is Asian, with 3.80% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.50%. Among those working part-time, it was 13.46%, and for those that did not work, the poverty rate was 21.83%.

Clayton County, Iowa Poverty

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Name Poverty
Less Than 9th Grade29.55%
High School12.16%
Some College8.12%
Bachelors or Greater3.41%

Clayton County, Iowa Poverty Rate by Education

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Rate Poverty
Male Unemployed13.79%
Female Unemployed7.27%
Female Employed6.61%
Male Employed5.87%

Clayton County, Iowa Poverty Rate by Employment Status and Sex

Clayton County, Iowa Income by Household Type

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Name Median Mean
Households$53,152$65,784
Families$67,961$78,819
Married Families$75,619-
Non Families$31,998$41,723
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Income by Household Type

Clayton County, Iowa Marital Status

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Marriage Rates

53.9%

Overall Marriage Rate

52.5%

Male Marriage Rate

55.4%

Female Marriage Rate

Clayton County, Iowa Married by Age and Sex

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Clayton 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 55-64.

Clayton County, Iowa Marital Status by Race

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Clayton County, Iowa Marital Status

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1,321

Number of Veterans

1,226

Male Veterans

95

Female Veterans

War Veterans
Vietnam567
Korea158
Second Gulf War156
First Gulf War114
World War II53

Clayton County, Iowa Veterans by War

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Age Group Veterans
65 to 74473
75+375
35 to 54238
55 to 64160
18 to 3475

Clayton County, Iowa Veterans by Age

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Name Veterans % of Total
White1,3119.69%
2+ Races1024.39%
Hispanic73.55%

Clayton County, Iowa Veterans by Race

Clayton County, Iowa Veterans by Education

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6.51%

Veteran Poverty Rate

24.96%

Veteran Disability Rate

Clayton County, Iowa Veterans by Education

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65.3%

Labor Force Participation

63.7%

Employment Rate

2.4%

Unemployment Rate

Clayton County, Iowa Employment by Age

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Clayton County, Iowa Employment by Race

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Clayton 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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73.54%

Born in Clayton County, Iowa

97.44%

Native Born

2.56%

Foreign Born

1.37%

Non Citizen

1.20%

Naturalized

Place of Birth

97.44% of Clayton County, Iowa residents were born in the United States, with 73.54% having been born in Iowa. 1.37% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Clayton 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