Decatur

County:: Macon County
County Seat:: Yes
Area (mi²):: 43.476
State:: Illinois

Decatur is a city located in Macon County, Illinois. Decatur has a 2025 population of 67,165. It is also the county seat of Macon County. Decatur is currently declining at a rate of -1.11% annually and its population has decreased by -5.3% since the most recent census, which recorded a population of 70,927 in 2020.

The average household income in Decatur is $71,363 with a poverty rate of 19.13%. The median age in Decatur is 39.9 years: 38.6 years for males, and 41.2 years for females.

Demographics

The racial composition of Decatur includes 67.19% White, 24.07% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Asian

Other race

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	47,281	67.19%
Black or African American	16,941	24.07%
Two or more races	4,336	6.16%
Asian	966	1.37%
Other race	750	1.07%
Native Hawaiian or Pacific Islander	69	0.1%
Native American	25	0.04%

Decatur Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Decatur's average per capita income is $42,551. Household income levels show a median of $50,809. The poverty rate stands at 19.13%.

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	$85,663	-
Families	$73,245	$92,176
Households	$50,809	$71,363
Non Families	$38,626	$47,185

$42,551

Average Income

$50,809

Median Household Income

19.13%

Poverty Rate