COUNTY
Grundy County
Illinois · 54,052 residents (2025 est.) · 418 sq mi
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Part of the Chicago metro area
Notable rankings
#110Lowest poverty rateof 3,1446.0%The short version
With 53,219 people, Grundy County is a county in Illinois. That puts it in the top 2% of US counties for household income. 15,684 more people live here than in 2000. 24% of adults hold a bachelor's degree, below the 36% national rate. 4% of locals were born outside the United States. Owners hold 74% of the housing stock.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 38.3
US median: 38.9
Less educated
24% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth
53,219
+42%since 2000
from 37,535 in 2000
54,052 in 2025 (Census Bureau estimate)
1990 – 2025
Land area
418 sq mi
Population, 1990 – 2024
202453K
Age distribution, 2024
Under 55.7%(3,007)
5 to 97.3%(3,872)
10 to 146.8%(3,601)
15 to 196.8%(3,632)
20 to 246.6%(3,512)
25 to 3412.8%(6,798)
35 to 4413.1%(6,988)
45 to 5413.1%(6,977)
55 to 6412.8%(6,801)
65 to 749.3%(4,931)
75 to 844%(2,139)
85 and over1.8%(961)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$92,235
−2%inflation adjusted, since 2000
from $51,719 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
59.7%
+18.8 ptssince 2009
from 40.8% in 2009
US average: 53.3%
Workforce by industry, 2024
Retail trade12.2%
Finance & insurance11.8%
Information11.7%
Professional, scientific, technical9.4%
Wholesale trade8.6%
Other services4.6%
Public administration3.7%
Transportation & warehousing2.9%
Arts, entertainment, food2.5%
Education & health services2.4%
Agriculture, forestry, fishing1.7%
Construction1.3%
Manufacturing0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$271,700
+19%inflation adjusted, since 2000
from $125,300 in 2000
US average: $376,019
1990 – 2024
2.9
+1%since 2009
from 2.9 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
27
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity
2000
White, non-Hispanic94.6%(35,502)
Black0.2%(67)
Hispanic / Latino4.1%(1,552)
Asian0.3%(112)
Other0%
2024
White, non-Hispanic82.4%(43,879)
Black2.3%(1,213)
Hispanic / Latino12%(6,368)
Asian0.6%(301)
Other2.7%(1,458)
38
+49%since 2009
from 25 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
18
−17%since 2020
from 22 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican9.4%(5,012)
Puerto Rican1.8%(959)
South American0.4%(223)
Venezuelan0.2%(130)
Colombian0.1%(54)
Uruguayan0.1%(39)
Central American0.1%(38)
Salvadoran0%(24)
Nicaraguan0%(14)
Spaniard0%(9)
Cuban0%(4)
Asian origin
Asian Indian0.2%(126)
Filipino0.2%(115)
Chinese0%(18)
Vietnamese0%(16)
Thai0%(13)
Japanese0%(11)
Cambodian0%(2)
Ancestry
German21.4%(11,382)
Irish14.4%(7,651)
Italian10.3%(5,477)
Polish9.9%(5,291)
English9.2%(4,904)
Norwegian4.9%(2,584)
American3.5%(1,862)
French1.9%(992)
Swedish1.7%(916)
Dutch1.5%(800)
Scottish1.4%(751)
Czech1.2%(650)
+ 35 more ancestry groups with data
Croatian1.1%(586)
Lithuanian0.9%(487)
Slovak0.8%(422)
Scotch-Irish0.6%(345)
Hungarian0.6%(302)
Subsaharan African0.5%(243)
British0.4%(238)
Danish0.3%(178)
Austrian0.3%(146)
Welsh0.2%(108)
Arab0.2%(98)
Finnish0.2%(90)
Slovene0.2%(90)
Russian0.2%(84)
West Indian0.2%(84)
French Canadian0.1%(75)
Bulgarian0.1%(74)
Belgian0.1%(69)
Palestinian0.1%(63)
Swiss0.1%(59)
Greek0.1%(55)
Serbian0.1%(41)
Jamaican0.1%(41)
Romanian0.1%(39)
Haitian0.1%(39)
Lebanese0.1%(33)
Ukrainian0%(18)
Canadian0%(17)
Portuguese0%(17)
Ethiopian0%(14)
Latvian0%(11)
Kenyan0%(5)
Nigerian0%(5)
Australian0%(3)
Syrian0%(2)
Section 05
Education
High school or higher
93.8%
+6.9 ptssince 2000
from 86.9% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Women 20-64 in the labor force
75.5%
+2.4 ptssince 2020
from 73.1% in 2020
US average: 74.6%
Section 08
People & community
Computer in household
95.6%
+2.0 ptssince 2020
from 93.6% in 2020
US average: 95.5%
Marital status
Men 15+
Never married33%(7,065)
Married55.1%(11,786)
Widowed2.1%(444)
Divorced9.8%(2,107)
Women 15+
Never married25.2%(5,374)
Married54%(11,519)
Widowed8%(1,709)
Divorced12.8%(2,735)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage
Direct-purchase
13.9%
+2.5 ptssince 2020
from 11.4% in 2020
US average: 13.8%
VA health care
1.8%
−0.1 ptssince 2020
from 1.9% in 2020
US average: 2.2%
Any private
80.1%
+0.9 ptssince 2020
from 79.2% in 2020
US average: 67.1%
Any public
28.8%
−0.1 ptssince 2020
from 28.9% 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)33.8%(965)
Gulf War (1990s)22%(627)
Vietnam era30.2%(861)
Korean War1.8%(51)
World War II0%(1)
Share of the 2,854 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.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
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Compare Grundy County to nearby counties
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GRUNDY COUNTY VS
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GRUNDY COUNTY VS
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Frequently asked
How many people live in Grundy County, Illinois?
Grundy County, Illinois has about 53,219 residents according to the 2024 American Community Survey.
What is the median household income in Grundy County, Illinois?
The typical household in Grundy County, Illinois earns about $92,235 a year. Half of households make more than that, and half make less.
Is Grundy County, Illinois expensive?
In Grundy County, Illinois, the median home is worth about $271,700, and the typical rent is about $1,177 a month.
How educated are people in Grundy County, Illinois?
About 23.6% of adults age 25 and over in Grundy County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Grundy County, Illinois?
About 6.0% of people in Grundy County, Illinois live below the federal poverty line.
Has Grundy County, Illinois grown since 1990?
Yes, Grundy County, Illinois has grown since 1990. The population has added about 20,882 residents, a change of about 65 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024