Marion   County MO United States

County FIPS 29127
Largest City Hannibal
State Missouri
Latitude 39.8059
Longitude -91.6224
Population 28,457
Density 65.16 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.
Download the data

Household Income

Median household: $62,903
Median individual: $35,433

Race

Mode: 89.2% White

Gender

 51.4% female 

Rent

  $808 / month  

Median house value: $158,101.0

Age

Median: 39.6 years old

Education

With at least college degree: 24.7%
With STEM degree: 36.8%

Marital Status

 48.1% married 

Never married: 30.9%

Labor Force Participation

 58.3% working 

Unemployed: 3.8%

Average Family Size

 2.98 people 

Commute Time

 17.6 minutes 

Health Care

 7.9% uninsured 

Poverty

 14.2%

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

Home (Maps) | Database License | Privacy | Database Releases | Database Order Lookup | Resources | Contact | FAQs
SimpleMaps.com is a product of Pareto Software, LLC. © 2010-2026.