United States › Illinois › DeKalb County COUNTY · 2000 CENSUS
DeKalb County Illinois · 88,969 residents · 631 sq mi
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The short version
DeKalb County is a county of 88,969 people in Illinois. The median age is 28.4, younger than the US median of 35.2. Owners hold 60% of the housing stock. The population is up 14% since 1990. 27% of adults hold a bachelor's degree or higher. Home values have risen by half since 1990, reaching $133,900.
At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 28.4
US median: 35.2
Average education
27% hold a bachelor's degree
US average: 24%
Less affordable
home values up 26%, inflation adjusted
US median home: $120,530
Section 01
Population & growth from 27.3 in 1990
US average: 35.2
Population, 1990 – 2024
75K 83K 92K 100K 108K 1990 2000 2010 2020 2024 DeKalb County Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $45,828
+13%inflation adjusted, since 1990
from $30,864 in 1990
US average: $42,589
from $12,657 in 1990
US average: $21,522
from 13.5% in 1990
US average: 12.4%
$133,900
+26%inflation adjusted, since 1990
from $80,900 in 1990
US average: $120,530
$577
+3%inflation adjusted, since 1990
from $424 in 1990
US average: $602
from 58.1% in 1990
40.5% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 93.3%(72,712)
Hispanic / Latino 2.6%(2,033)
2000
White, non-Hispanic 85.2%(75,772)
Hispanic / Latino 6.6%(5,830)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
+ 3 more hispanic origin groups with data Asian origin
+ 2 more asian origin groups with data Ancestry
+ 43 more ancestry groups with data from 26.1% in 1990
US average: 24.4%
High school or higher
from 83.9% in 1990
US average: 80.3%
from 11.2% in 1990
US average: 8.8%
Section 06
Commute & transportation from 19.9 min in 1990
US average: 17.6
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
Marital status
Men 15+
Never married 39.2%(13,739)
Women 15+
Never married 34.1%(12,466)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 10.6% in 2013
US average: 8.4%
from 61.4% in 2020
US average: 54.8%
Direct-purchase
from 14.0% in 2020
US average: 13.8%
from 13.5% in 2020
US average: 18.4%
from 19.4% in 2020
US average: 20.9%
VA health care
from 1.8% in 2020
US average: 2.2%
Any private
from 73.3% in 2020
US average: 67.1%
Any public
from 31.9% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 26.6%(1,087)
Gulf War (1990s) 17.6%(722)
Share of the 4,092 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to DeKalb County Head to head
Compare DeKalb County to nearby counties DEKALB COUNTY VS
Kane County
Income $103,163 +125%
Home value $327,000 +144%
Population 525,757 +416%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Kendall County
Income $111,601 +144%
Home value $322,400 +141%
Population 145,470 +43%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Lee County
Income $70,292 +53%
Home value $154,600 +15%
Population 32,914 −68%
SEE FULL COMPARISON →
DEKALB COUNTY VS
Boone County
Income $84,571 +85%
Home value $216,900 +62%
Population 53,568 −47%
SEE FULL COMPARISON →
Frequently asked
How many people live in DeKalb County, Illinois? DeKalb County, Illinois has about 88,969 residents according to the 2000 Census.
What is the median household income in DeKalb County, Illinois? The typical household in DeKalb County, Illinois earns about $45,828 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 $133,900, and the typical rent is about $577 a month.
How educated are people in DeKalb County, Illinois? About 26.8% 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 11.4% of people in DeKalb County, Illinois live below the federal poverty line.
Has DeKalb County, Illinois grown since 1990? Yes, DeKalb County, Illinois has grown since 1990. The population has added about 11,037 residents, a change of about 14 percent over that period.
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