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zipcodes.pro — CITY/IA/LE-MARS

Le Mars ZIP code, Iowa

The ZIP code for Le Mars, IA is 51031, and its area code is 712.

USPS city name
1 ZIP code
Population
10,640
Area code
712
State
Iowa

Le Mars in numbers

About 10,640 people live in Le Mars, in 4,342 households, the 39th-largest of Iowa's 1,017 census places. The median household income is $74,701 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $219,200 (5% above the Iowa median), and median gross rent is $929 a month. The median age is 39.0; 21.1% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 16 minutes.

Population10,640Le Mars10,640
Households4,342Le Mars4,342
Median age39.0Le Mars39.0Iowa38.6US 38.9
Median household income$74,701Le Mars$74,701Iowa$75,059US $80,734
Median home value$219,200Le Mars$219,200Iowa$208,000US $332,700
Median gross rent$929Le Mars$929Iowa$972US $1,413
Bachelor's degree or higher21.1%Le Mars21.1%Iowa31.4%US 35.7%
Mean commute16.3 minLe Mars16.3 minIowa19.8 minUS 26.4 min
Population density1,211 / sq miLe Mars1,211 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Le Mars city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Le Mars

ZIP codes with the USPS city name Le Mars
ZIP City Type Population Median income Median home
51031 Le Mars , IA Standard 12,808 $76,525 $222,800

Map of Le Mars ZIP codes

51031

The ZIP codes of Le Mars, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Le Mars

The nearest larger towns are Sioux City (86,101 people, 23 mi), South Sioux City, NE (13,907 people, 25 mi) and Vermillion, SD (11,878 people, 38 mi).

Towns near Le Mars
TownPopulationDistance
Orange City 6,426 16.4 mi
Sioux Center 8,454 20.3 mi
Hawarden 2,658 21.8 mi
Sioux City 86,101 22.6 mi
North Sioux City, SD 3,045 23.6 mi
South Sioux City, NE 13,907 25.2 mi
Dakota Dunes, SD 3,936 25.6 mi
Elk Point, SD 2,537 26.7 mi
Sergeant Bluff 5,171 28.0 mi
Dakota City, NE 2,675 28.1 mi
Rock Valley 4,059 29.7 mi

More nearby: every ZIP code in Plymouth County · Iowa ZIP codes

Cite this page

zipcodes.pro. “Le Mars, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/le-mars

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