Seneca   County OH United States

County FIPS 39147
Largest City Tiffin
State Ohio
Latitude 41.1239
Longitude -83.1277
Population 54,770
Density 99.43 people per square mile
Time Zone America/New York
  • 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: $66,025
Median individual: $36,024

Race

Mode: 89.6% White

Gender

 50.2% male 

Rent

  $856 / month  

Median house value: $153,186.0

Age

Median: 40.2 years old

Education

With at least college degree: 20.6%
With STEM degree: 40.6%

Marital Status

 47.5% married 

Never married: 32.9%

Labor Force Participation

 61.5% working 

Unemployed: 3.6%

Average Family Size

 2.88 people 

Commute Time

 20.7 minutes 

Health Care

 5.3% uninsured 

Poverty

 11.9%

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

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