Le Mars

County:: Plymouth County
County Seat:: Yes
Area (mi²):: 8.537
State:: Iowa

Le Mars is a city located in Plymouth County, Iowa. Le Mars has a 2025 population of 10,629. It is also the county seat of Plymouth County. Le Mars is currently growing at a rate of 0.06% annually and its population has increased by 0.26% since the most recent census, which recorded a population of 10,601 in 2020.

The average household income in Le Mars is $90,390 with a poverty rate of 8.85%. The median age in Le Mars is 39.1 years: 38.9 years for males, and 39.2 years for females.

Demographics

The racial composition of Le Mars includes 85.6% White, 5.32% Black or African American, 4.3% other race, and smaller percentages for Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	9,071	85.6%
Black or African American	564	5.32%
Two or more races	474	4.47%
Other race	456	4.3%
Asian	18	0.17%
Native Hawaiian or Pacific Islander	13	0.12%
Native American	1	0.01%

Le Mars Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Le Mars' average per capita income is $51,363. Household income levels show a median of $72,381. The poverty rate stands at 8.85%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$93,835	-
Families	$86,313	$102,807
Households	$72,381	$90,390
Non Families	$42,038	$64,012

$51,363

Average Income

$72,381

Median Household Income

8.85%

Poverty Rate