50138   Zip Code Knoxville Marion IA United States

City Knoxville
County Marion
State Iowa
Latitude 41.30246
Longitude -93.10534
Population 11,117
Density 66.06 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: $74,693
Median individual: $41,010

Race

Mode: 94.5% White

Gender

 52.6% female 

Rent

  $815 / month  

Median house value: $195,459.0

Age

Median: 42.9 years old

Education

With at least college degree: 28.0%
With STEM degree: 46.5%

Marital Status

 58.0% married 

Never married: 22.1%

Labor Force Participation

 63.7% working 

Unemployed: 3.7%

Average Family Size

 2.82 people 

Commute Time

 23.5 minutes 

Health Care

 2.7% uninsured 

Poverty

 10.5%

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

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