Clayton   County IA United States

County FIPS 19043
Largest City Postville
State Iowa
Latitude 42.8447
Longitude -91.3414
Population 17,013
Density 21.87 people per square mile
Time Zone America/Chicago
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $67,242
Median individual: $39,247

Race

Mode: 95.0% White

Gender

 50.3% male 

Rent

  $790 / month  

Median house value: $168,490.0

Age

Median: 46.4 years old

Education

With at least college degree: 14.5%
With STEM degree: 31.7%

Marital Status

 56.8% married 

Never married: 25.3%

Labor Force Participation

 61.7% working 

Unemployed: 2.5%

Average Family Size

 2.83 people 

Commute Time

 23.1 minutes 

Health Care

 8.4% uninsured 

Poverty

 10.9%

All data comes from the SimpleMaps US Counties Database, 2026.

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