Le Mars, Iowa

Le Mars population, 2020 to 2024

Le Mars added 69 residents from July 2020 to July 2024, a change of +0.7%. In the latest year it moved by +33. Among 85 Iowa places of 5,000 or more, that growth ranks 46th; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Le Mars is 1.1 times that size.

Le Mars covers 8.79 square miles of land, for 1,214 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Le Mars is less dense than the typical town.

What county Le Mars is in

All of Le Mars's residents live in Plymouth County, which had 25,825 residents in 2024. Le Mars holds 41.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Le Mars

1 ZIP Code Tabulation Area (ZCTA) overlaps Le Mars by at least 10% of the ZCTA's or the city's land: 51031. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Le Mars is

The Census internal point of Le Mars is at 42.781500, -96.173300. Des Moines, the capital, is 155.1 miles ESE in a straight line. The nearest larger place is Sioux City, IA (86,875 people), 22.6 miles away. The nearest city of 100,000 or more is Sioux Falls, SD, 59.5 miles away.

Daylight in Le Mars

At 42.78° N, Le Mars gets about 15 h 20 min of daylight around the June solstice and 9 h 02 min around the December solstice, a swing of 6 h 18 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Le Mars

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Remsen, 10.4 miles away, with 1,681 people.