Plymouth   County IA United States

County FIPS 19149
Largest City Le Mars
State Iowa
Latitude 42.7378
Longitude -96.2141
Population 25,747
Density 29.84 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: $83,251
Median individual: $44,216

Race

Mode: 89.4% White

Gender

 50.9% male 

Rent

  $910 / month  

Median house value: $227,112.0

Age

Median: 41.3 years old

Education

With at least college degree: 21.7%
With STEM degree: 41.0%

Marital Status

 59.1% married 

Never married: 25.8%

Labor Force Participation

 68.9% working 

Unemployed: 2.2%

Average Family Size

 2.99 people 

Commute Time

 19.2 minutes 

Health Care

 5.3% uninsured 

Poverty

 6.9%

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

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