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ZIP Code Database - Facts & Stats

Data Last Updated: December 1, 2021

ZIP Codes for City of Le Mars, IA

Le Mars, IA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 51031StandardPlymouth12,336712

Timezone(s):Central (GMT -06:00)
Population:9,826 (More Details)
Male Population:4,760
Female Population:5,066
Median Age:39
ZIP Codes:1
Area Codes:1
Total Area:864 square miles (county)
Land Area:863 square miles (county)
Water Area:1 square miles (county)

Le Mars, IA Demographic Information *

Total population9,826
Male population4,760
Female population5,066
Median age (years)39.2
White Population9,255
Black Population53
Indian Population29
Asian Population73
Hawaiian Population2
Hispanic Population530
Median age (Male)36.7
Median age (Female)41.5
Total households4,013
Family households (families)2,593
Average household size2.39
Average family size3
Total housing units4,220
* Demographic data is based on 2010 Census.

Le Mars, IA Other Information

  • Located in PLYMOUTH County, Iowa
  • Le Mars, IA is also known as:
    • LEMARS, IA

58 Cities within 30 miles of Le Mars, IA Products


  1. U.S. Postal Service [Last Updated: 12/1/2021],
  2. Internal Data Creation [Last Updated: 12/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],