Decatur, Illinois Population 2024

67,477

Decatur is a city located in Macon County Illinois. Decatur has a 2024 population of 67,477. It is also the county seat of Macon County. Decatur is currently declining at a rate of -1.19% annually and its population has decreased by -4.58% since the most recent census, which recorded a population of 70,717 in 2020.

The average household income in Decatur is $70,219 with a poverty rate of 19.47%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Decatur is 39.7 years, 38 years for males, and 40.7 years for females.

Decatur Demographics

According to the most recent ACS, the racial composition of Decatur was:

  • White: 68.27%
  • Black or African American: 24.04%
  • Two or more races: 5.32%
  • Asian: 1.3%
  • Other race: 0.94%
  • Native Hawaiian or Pacific Islander: 0.1%
  • Native American: 0.04%
Land Area (mi²)
42.3 sq mi
Density (mi²)
1,594.50/sq mi
Growth Since 2020
-4.58% (-3,240)
The current population of Decatur, Illinois is 67,477 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 70,717.

Decatur, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White48,45368.27%
Black or African American17,06424.04%
Two or more races3,7755.32%
Asian9201.3%
Other race6640.94%
Native Hawaiian or Pacific Islander690.1%
Native American300.04%

White

Black or African American

Two or more races

Asian

Other race

Native Hawaiian or Pacific Islander

Native American

Decatur Population by Race

Decatur Population Pyramid 2024

Decatur Median Age

39.7

Total

38

Male

40.7

Female

Decatur Adults

There are 56,077 adults, (14,298 of whom are seniors) in Decatur.

Decatur Age Dependency

69.9

Age Dependency Ratio

34.2

Old Age Dependency Ratio

35.7

Child Dependency Ratio

Decatur Sex Ratio

Female37,31352.57%
Male33,66247.43%

Decatur Population by Age

Decatur Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All30,7272.2161.238.8
Non Family14,4691.1749.550.5
Married11,1663.0182.917.1
Female3,7843.574456
Male1,3082.9155.944.1

3.04

Average Family Size

2.21

Average Household Size

61.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Decatur Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Decatur Educational Attainment by Sex (over 25)

Decatur Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 66.72%.

Decatur Educational Attainment by Race

All

Male

Female

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$41,056

Average Earnings

$47,347

Average Male

$34,827

Average Female

Decatur Earnings by Educational Attainment

Decatur Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Decatur Language

95.38% of Decatur residents speak only English, while 4.62% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.44% of the population.

Decatur Language

Decatur Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White45,5246,41614.09%
Black16,2395,38733.17%
Multiple3,56776121.33%
Hispanic1,96459730.4%
Other64827141.82%
Asian87219622.48%
Native301860%
Islander6035%

19.47%

Overall Poverty Rate

16.93%

Male Poverty Rate

21.78%

Female Poverty Rate

Poverty in Decatur

The race most likely to be in poverty in Decatur is Native, with 60% below the poverty level.

The race least likely to be in poverty in Decatur is Islander, with 5% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.31%. Among those working part-time, it was 23.03%, and for those that did not work, the poverty rate was 29.16%.

Decatur Poverty

rate

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Rate
Poverty
Less Than 9th Grade34.42%
High School21.53%
Some College13.64%
Bachelors or Greater6.09%

Decatur Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed56.8%
Female Unemployed47.58%
Female Employed10.95%
Male Employed6.5%

Decatur Poverty Rate by Employment Status and Sex

Decatur Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Decatur Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

40.9%

Overall Marriage Rate

43.8%

Male Marriage Rate

38.5%

Female Marriage Rate

Decatur Married by Age and Sex

male

female

Decatur Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Decatur Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Decatur Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,298

Number of Veterans

3,987

Male Veterans

311

Female Veterans

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Decatur Veterans by War

count

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Decatur Veterans by Age

count

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Decatur Veterans by Race

Decatur Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.96%

Veteran Poverty Rate

27.65%

Veteran Disability Rate

Decatur Veterans by Education

LaborForceParticipation

56.7%

Labor Force Participation

51.7%

Employment Rate

8.9%

Unemployment Rate

Decatur Employment by Age

LaborForceParticipation

Decatur Employment by Race

LaborForceParticipation

Decatur Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

77.69%

Born in Decatur

97.28%

Native Born

2.72%

Foreign Born

1.63%

Non Citizen

1.08%

Naturalized

Place of Birth

97.28% of Decatur residents were born in the United States, with 77.69% having been born in Illinois. 1.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Decatur Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202963,427-810-1.26%
202864,237-810-1.25%
202765,047-810-1.23%
202665,857-810-1.21%
202566,667-810-1.2%
202467,477-810-1.19%
202368,287-810-1.17%
202269,097-822-1.18%
202169,919-798-1.13%
202070,717-17-0.02%
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%
201076,09500%
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%
18603,839-59,588-93.95%
showing: 35 rows

Decatur Population by Year