51040   Zip Code Onawa Monona IA United States

City Onawa
County Monona
State Iowa
Latitude 42.03073
Longitude -96.0706
Population 3,500
Density 26.94 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: $71,179
Median individual: $37,529

Race

Mode: 93.5% White

Gender

 52.1% female 

Rent

  $947 / month  

Median house value: $143,817.0

Age

Median: 37.6 years old

Education

With at least college degree: 19.9%
With STEM degree: 52.4%

Marital Status

 51.2% married 

Never married: 29.8%

Labor Force Participation

 62.2% working 

Unemployed: 1.2%

Average Family Size

 2.71 people 

Commute Time

 18.3 minutes 

Health Care

 4.6% uninsured 

Poverty

 14.2%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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