CensusEasy
COUNTY · 1990 CENSUS

DeKalb County

Illinois · 77,932 residents · 631.337 sq mi
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The short version

DeKalb County has roughly average household income, with a median household income of $30,864. Population has declined 12% since 2000. Median home value is $80,900. At a median age of 27.3, residents skew younger than the country as a whole.

At a glance
Average income
near the US median
US median: $30,130
Younger
median age 27.3
US median: 33.0
More educated
26% hold a bachelor's degree
US average: 20%
More affordable
home values down 20%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
77,932
−12%vs 2000
vs 88,969 in 2000
1990 – 2025
Population density
123 / sq mi
−12%vs 2000
vs 141 / sq mi in 2000
US average: 221
Median age
27.3
−4%vs 2000
vs 28.4 in 2000
US average: 33.0
Population, 1990 – 2024
75K83K92K100K108K1990201020202024DeKalb County
2024101K
1990201020202024
Section 02

Income & economy

Median household income
$30,864
−11%inflation adjusted, since 2000
vs $45,828 in 2000
US average: $30,130
1990 – 2024
Per capita income
$12,657
−35%vs 2000
vs $19,462 in 2000
US average: $14,340
Poverty rate
13.5%
+2.2 ptsvs 2000
vs 11.4% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$80,900
−20%inflation adjusted, since 2000
vs $133,900 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$424
−3%inflation adjusted, since 2000
vs $577 in 2000
US average: $450
Owner-occupied
58.1%
−1.4 ptsvs 2000
vs 59.5% in 2000
41.9% rent
Afford Score
2.6
−10%vs 2000
vs 2.9 in 2000
1990 – 2024
RELATED:See current rent listings in DeKalb County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic85.2%(75,772)
Black4.5%(4,040)
Hispanic / Latino6.6%(5,830)
Asian2.3%(2,067)
Other0%
Diversity Score30.8%(27,422)
1990
White, non-Hispanic93.3%(72,712)
Black2.9%(2,238)
Hispanic / Latino2.6%(2,033)
Asian2.3%(1,823)
Other1.5%(1,159)
Diversity Score21.4%(16,660)
Diversity Score
21
−31%vs 2000
vs 31 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
26.1%
−0.7 ptsvs 2000
vs 26.8% in 2000
US average: 20.3%
High school or higher
83.9%
−3.6 ptsvs 2000
vs 87.5% in 2000
US average: 75.2%
Graduate degree
11.2%
+0.4 ptsvs 2000
vs 10.8% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
19.9 min
+10%vs 2000
vs 18.2 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.

Drill deeper

Places similar to DeKalb County

Story County
Pop 101,291
Kankakee County
Pop 105,525
LaPorte County
Pop 111,294
LaSalle County
Pop 107,773
Places similar to DeKalb County
Head to head

Compare DeKalb County to nearby counties

DEKALB COUNTY VS
Kane County
Income$103,163+234%
Home value$327,000+304%
Population525,757+416%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Kendall County
Income$111,601+262%
Home value$322,400+299%
Population145,470+43%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Lee County
Income$70,292+128%
Home value$154,600+91%
Population32,914−68%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Boone County
Income$84,571+174%
Home value$216,900+168%
Population53,568−47%
SEE FULL COMPARISON →
Frequently asked

How many people live in DeKalb County, Illinois?

DeKalb County, Illinois has about 77,932 residents according to the 1990 Census.

What is the median household income in DeKalb County, Illinois?

The typical household in DeKalb County, Illinois earns about $30,864 a year. Half of households make more than that, and half make less.

Is DeKalb County, Illinois expensive?

In DeKalb County, Illinois, the median home is worth about $80,900, and the typical rent is about $424 a month.

How educated are people in DeKalb County, Illinois?

About 26.1% of adults age 25 and over in DeKalb County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in DeKalb County, Illinois?

About 13.5% of people in DeKalb County, Illinois live below the federal poverty line.

Keep going

Explore from here

23 census tracts (top 20 by population)
Census Tract 1Census Tract 8Census Tract 10.02Census Tract 14Census Tract 6Census Tract 9Census Tract 13Census Tract 2Census Tract 20Census Tract 4.02Census Tract 16Census Tract 4.01Census Tract 10.03Census Tract 15Census Tract 5Census Tract 7Census Tract 22Census Tract 18Census Tract 17Census Tract 3
13 ZIP codes
ZIP 60115ZIP 60178ZIP 60548ZIP 60135ZIP 60112ZIP 60552ZIP 60520ZIP 60145ZIP 60146ZIP 60556ZIP 60150ZIP 60550ZIP 60111
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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