Lanark

County:: Carroll County
County Seat:: No
Area (mi²):: 1.121
State:: Illinois

Lanark is a city located in Carroll County, Illinois. Lanark has a 2025 population of 1,444. Lanark is currently declining at a rate of -0.76% annually and its population has decreased by -3.6% since the most recent census, which recorded a population of 1,498 in 2020.

The average household income in Lanark is $79,943 with a poverty rate of 14.29%.The median age in Lanark is 36.9 years: 36.2 years for males, and 38.3 years for females.

Demographics

The racial composition of Lanark includes 94.77% White, and smaller percentages for Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,431	94.77%
Two or more races	57	3.77%
Black or African American	13	0.86%
Other race	9	0.6%

Lanark Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lanark's average per capita income is $50,100. Household income levels show a median of $66,250. The poverty rate stands at 14.29%.

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	$117,778	-
Families	$97,000	$95,926
Households	$66,250	$79,943
Non Families	$38,000	$43,309

$50,100

Average Income

$66,250

Median Household Income

14.29%

Poverty Rate