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CITY · 1990 CENSUS

Decatur

Illinois · 83,885 residents · 43.476 sq mi
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The short version

Decatur has lower-than-average household income, with a median household income of $25,451. Population has held roughly steady since 2000. Median home value is $42,200.

At a glance
Lower income
below the US median
US median: $30,130
Older
median age 35.0
US median: 33.0
Less educated
16% hold a bachelor's degree
US average: 20%
More affordable
home values down 8%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

83,885
+2%vs 2000
vs 81,860 in 2000
1990 – 2025
1,929 / sq mi
+2%vs 2000
vs 1,883 / sq mi in 2000
US average: 221
35.0
−6%vs 2000
vs 37.2 in 2000
US average: 33.0
Population, 19902024
68K73K77K81K85K1990201020202024Decatur
202470K
1990201020202024
Section 02

Income & economy

$25,451
+1%inflation adjusted, since 2000
vs $33,111 in 2000
US average: $30,130
1990 – 2024
$13,348
−30%vs 2000
vs $19,009 in 2000
US average: $14,340
15.9%
−0.6 ptsvs 2000
vs 16.5% in 2000
US average: 13.2%
Section 03

Housing

$42,200
−8%inflation adjusted, since 2000
vs $60,600 in 2000
US average: $93,722
1990 – 2024
$339
Unchangedinflation adjusted, since 2000
vs $447 in 2000
US average: $450
65.9%
−0.5 ptsvs 2000
vs 66.4% in 2000
34.1% rent
1.7
−9%vs 2000
vs 1.8 in 2000
1990 – 2024
RELATED:See current rent listings in Decatur on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic77%(62,993)
Black19.4%(15,846)
Hispanic / Latino1.2%(978)
Asian0.7%(536)
Other0%
Diversity Score43.3%(35,439)
1990
White, non-Hispanic82.6%(69,269)
Black16.6%(13,941)
Hispanic / Latino0.7%(586)
Asian0.5%(381)
Other0.4%(294)
Diversity Score37.5%(31,481)
38
−13%vs 2000
vs 43 in 2000
1990 – 2024
Section 05

Education

15.7%
−1.3 ptsvs 2000
vs 17.0% in 2000
US average: 20.3%
High school or higher
74.0%
−6.8 ptsvs 2000
vs 80.8% in 2000
US average: 75.2%
5.5%
−0.2 ptsvs 2000
vs 5.7% in 2000
US average: 7.1%
Section 06

Commute & transportation

13.8 min
+20%vs 2000
vs 11.5 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Decatur, Illinois?

Decatur, Illinois has about 83,885 residents according to the 1990 Census.

What is the median household income in Decatur, Illinois?

The typical household in Decatur, Illinois earns about $25,451 a year. Half of households make more than that, and half make less.

Is Decatur, Illinois expensive?

In Decatur, Illinois, the median home is worth about $42,200, and the typical rent is about $339 a month.

How educated are people in Decatur, Illinois?

About 15.7% of adults age 25 and over in Decatur, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Decatur, Illinois?

About 15.9% of people in Decatur, Illinois live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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