Lamar

County:: Barton County
County Seat:: Yes
Area (mi²):: 5.214
State:: Missouri

Lamar is a city located in Barton County, Missouri. Lamar has a 2025 population of 4,326. It is also the county seat of Barton County. Lamar is currently growing at a rate of 0.28% annually and its population has increased by 1.43% since the most recent census, which recorded a population of 4,265 in 2020.

The average household income in Lamar is $53,386 with a poverty rate of 33.29%. The median age in Lamar is 39.6 years: 42.7 years for males, and 38.3 years for females.

Demographics

The racial composition of Lamar includes 93.8% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	4,024	93.8%
Two or more races	204	4.76%
Other race	37	0.86%
Black or African American	25	0.58%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Lamar Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lamar's average per capita income is $32,866. Household income levels show a median of $34,894. The poverty rate stands at 33.29%.

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	$69,244	-
Families	$52,813	$62,738
Households	$34,894	$53,386
Non Families	$23,977	$33,561

$32,866

Average Income

$34,894

Median Household Income

33.29%

Poverty Rate