Decatur Flag

Decatur

County:
Macon County
County Seat:
Yes
Area (mi²):
44.163
State:
Illinois

Decatur is a city located in Macon County, Illinois. Decatur has a 2026 population of 67,655. It is also the county seat of Macon County. Decatur is currently declining at a rate of -0.81% annually and its population has decreased by -4.68% since the most recent census, which recorded a population of 70,978 in 2020.

The median household income in Decatur is $51,592 with a poverty rate of 19.38%. The median age in Decatur is 39.2 years: 38.1 years for males, and 40.4 years for females. For every 100 females there are 89.7 males.

67.7K
Total Population
1,532
Density (mi²)
-554 -0.81%
Growth

Decatur Population

Decatur Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202667,655-554-0.81%
202568,209-554-0.81%
202468,763-61-0.09%
202368,824-445-0.64%
202269,269-877-1.25%
202170,146-832-1.17%
202070,978-174-0.24%
201970,734-412-0.58%
201871,146-686-0.96%
201771,832-689-0.95%
201672,521-770-1.05%
201573,291-887-1.2%
201474,178-793-1.06%
201374,971-485-0.64%
201275,456-466-0.61%
201175,922-173-0.23%
201076,095-27-0.04%
200081,860-2,025-2.41%
199083,885-10,054-10.7%
198093,9393,5423.92%
197090,39712,39315.89%
196078,00411,73517.71%
195066,2696,96411.74%
194059,3051,7953.12%
193057,51013,69231.25%
192043,81812,67840.71%
191031,14010,38650.04%
190020,7543,91323.23%
189016,8417,29476.4%
18809,5472,38633.32%
18707,1613,32286.53%
18603,83900%

Median Age

Overall: 39.2 years
Female: 40.4 years
Male: 38.1 years

Decatur Adults

There are 55,129 adults, (14,840 of whom are seniors) in Decatur.

Sex Ratio

Female: 36,794 (52.7%)
Male: 33,021 (47.3%)

Demographics

The racial composition of Decatur includes 66.11% White, 23.28% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White46,15266.11%
Black or African American16,25523.28%
Two or more races5,2957.58%
Asian1,0291.47%
Other race9721.39%
Native American690.1%
Native Hawaiian or Pacific Islander430.06%
Race
Population ↓
Percentage (of total)
White8331.19%
Two or more races8221.18%
Other race6090.87%
Native American290.04%
Black or African American180.03%
Race
Population ↓
Percentage (of total)
White45,31964.91%
Black or African American16,23723.26%
Two or more races4,4736.41%
Asian1,0291.47%
Other race3630.52%
Native Hawaiian or Pacific Islander430.06%
Native American400.06%

Decatur Marital Status

Economics and Income Statistics

Decatur 's average per capita income is $44,348. Household income levels show a median of $51,592. The poverty rate stands at 19.38%.

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$92,063-
Families$74,623$92,599
Households$51,592$72,143
Non Families$39,659$49,381

$44,348

Average Income

$51,592

Median Household Income

19.38%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)