Decatur, Illinois Population 2023

68,842

Decatur is a city located in Macon County Illinois. It is also the county seat of Macon County. With a 2023 population of 68,842, it is the 17th largest city in Illinois and the 598th largest city in the United States.Decatur is currently declining at a rate of -0.81% annually and its population has decreased by -4.20% since the most recent census, which recorded a population of 71,857 in 2020. Spanning over 47 miles, Decatur has a population density of 1,627 people per square mile.

The average household income in Decatur is $59,490 with a poverty rate of 22.36%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Decatur is 39.8 years, 37.7 years for males, and 41.2 years for females.

Decatur Demographics

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

  • White: 70.24%
  • Black or African American: 22.55%
  • Two or more races: 5.40%
  • Asian: 1.05%
  • Other race: 0.43%
  • Native American: 0.24%
  • Native Hawaiian or Pacific Islander: 0.08%
The current population of Decatur, Illinois is 68,842 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 71,857.

Decatur, Illinois Population 2023

Population by Race

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Decatur Population by Race

Decatur Population Pyramid 2023

Decatur Median Age

39.8

Total

37.7

Male

41.2

Female

Decatur Adults

There are 56,753 adults, (14,556 of whom are seniors) in Decatur.

Decatur Age Dependency

70.3

Age Dependency Ratio

34.5

Old Age Dependency Ratio

35.8

Child Dependency Ratio

Decatur Sex Ratio

Female38,34953.37%
Male33,50846.63%

Decatur Population by Age

Decatur Renter vs Owner Occupied by Household Type

3

Average Family Size

2.2

Average Household Size

61.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Decatur Households and Families

Male

Female

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

The highest rate of high school graduation is among white people with a rate of 78.86%.

The highest rate of bachelors degrees is among asian people with a rate of 49.86%.

Decatur Educational Attainment by Race

All

Male

Female

$35,142

Average Earnings

$43,105

Average Male

$28,593

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

96.28% of Decatur residents speak only English, while 3.72% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.94% of the population.

Decatur Language

Decatur Poverty by Race

rate

22.36%

Overall Poverty Rate

17.49%

Male Poverty Rate

21.07%

Female Poverty Rate

Poverty in Decatur

The race most likely to be in poverty in Decatur is Multiple, with 62.53% below the poverty level.

The race least likely to be in poverty in Decatur is Asian, with 10.66% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.97%. Among those working part-time, it was 23.36%, and for those that did not work, the poverty rate was 25.70%.

Decatur Poverty

Decatur Poverty Rate by Education

Decatur Poverty Rate by Employment Status and Sex

Decatur Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

mean

median

Income by Household Type

Decatur Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

40.5%

Overall Marriage Rate

44.0%

Male Marriage Rate

37.6%

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 45-54.

Decatur Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Decatur Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,498

Number of Veterans

4,122

Male Veterans

376

Female Veterans

Decatur Veterans by War

Decatur Veterans by Age

count

Decatur Veterans by Race

Decatur Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

7.22%

Veteran Poverty Rate

27.99%

Veteran Disability Rate

Decatur Veterans by Education

LaborForceParticipation

57.5%

Labor Force Participation

52.1%

Employment Rate

9.3%

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

80.44%

Born in Decatur

99.36%

Native Born

2.54%

Foreign Born

1.09%

Non Citizen

1.45%

Naturalized

Place of Birth

99.36% of Decatur residents were born in the United States, with 80.44% having been born in Illinois. 1.09% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Decatur Place of Birth

Note: data after 2020 is projected based on recent growth

Decatur Population by Year