51031   Zip Code Le Mars Plymouth IA United States

City Le Mars
County Plymouth
State Iowa
Latitude 42.80282
Longitude -96.18092
Population 12,808
Density 54.66 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: $76,525
Median individual: $44,063

Race

Mode: 85.5% White

Gender

 50.3% female 

Rent

  $928 / month  

Median house value: $216,714.0

Age

Median: 39.0 years old

Education

With at least college degree: 21.9%
With STEM degree: 37.8%

Marital Status

 55.2% married 

Never married: 28.4%

Labor Force Participation

 71.6% working 

Unemployed: 2.6%

Average Family Size

 3.03 people 

Commute Time

 16.8 minutes 

Health Care

 5.8% uninsured 

Poverty

 8.3%

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

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