Le Mars, IA 51031 ZIP Code Profile

Related Place Profiles:
Le Mars, IA | Struble, IA

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ZIP Code 51031: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Le Mars, IA 51031

Acceptable Alternative
Struble, IA 51031

Not Acceptable, USPS
Lemars, IA 51031

  • ZIP Code Type: STANDARD
  • County: Plymouth County
  • Centroid: Latitude 42.787, Longitude -96.173
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 51031 has segments in 2 Counties (Plymouth, Sioux).

  • Businesses Addresses: 464
  • PO Box Addresses: 145
  • Residential Addresses: 5,075
    • Multi-Family Addresses: 386
    • Single Family Addresses: 4,689

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


51031 ZIP Code Map

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Le Mars, IA 51031 Data & Demographics (As of July 1, 2017)


Total Population 12,341
Daytime Population: Workers 7,949
Daytime Population: Residents 5,551
Total Daytime Population (TDP) 13,500
Ratio TDP/Total Population1 1.09
Population in Households 12,140
Population in Familes 9,929
Population in Group Qrtrs 201
Population Density2 53
Diversity Index3 26


Median Household Income $56,316
Average Household Income $70,586
Per Capita Income $28,759


Total Housing Units 5,326 (100%)
Owner Occupied HU 3,578 (67.2%)
Renter Occupied HU 1,408 (26.4%)
Vacant Housing Units 340 ( 6.4%)
Median Home Value $141,626
Average Home Value $163,436


Total Households 4,986
Average Household Size 2.43
Family Households 3,308
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.12% 0.26%
Households 0.26% 0.33%
Families 0.1% 0.23%
Median Household Income   2.07%
Per Capita Income   2.76%

Le Mars, IA 51031 - Peer Comparisons by Rank and Percentile

The table below compares 51031 to the other 963 ZIP Codes in Iowa by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 70 93rd
Population Density # 264 73rd
Diversity Index # 121 87th
Median Household Income # 387 60th
Per Capita Income # 407 58th

Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.

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