CensusEasy
COUNTY

Grundy County

Illinois · 54,052 residents (2025 est.) · 418.128 sq mi
Time machine
COMPARE TO
Part of the Chicago metro area
Compare
Notable rankings
#110Lowest poverty rateof 3,1446.0%
The short version

Grundy County is wealthier than most US places, with a median household income of $92,235. Population has grown 42% since 2000. Median home value has more than doubled since 2000, reaching $271,700. Poverty is rare here, at 6.0% of residents. It ranks in the top 5% of US counties for household income.

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

Total population
53,219
+42%since 2000
from 37,535 in 2000
1990 – 2025
Population density
127 / sq mi
+14%since 2009
from 111 / sq mi in 2009
US average: 281
Median age
38.3
+6%since 2000
from 36.3 in 2000
US average: 38.9

PEP 2025 EST:54,052 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
30K37K43K49K55K1990201020202024Grundy County
202453K
1990201020202024
Age distribution, 2024
Under 55.7%(3,007)
US avg: 5.6%
5 to 97.3%(3,872)
US avg: 6%
10 to 146.8%(3,601)
US avg: 6.4%
15 to 196.8%(3,632)
US avg: 6.6%
20 to 246.6%(3,512)
US avg: 6.5%
25 to 3412.8%(6,798)
US avg: 13.7%
35 to 4413.1%(6,988)
US avg: 13.2%
45 to 5413.1%(6,977)
US avg: 12.2%
55 to 6412.8%(6,801)
US avg: 12.7%
65 to 749.3%(4,931)
US avg: 10.2%
75 to 844%(2,139)
US avg: 5.1%
85 and over1.8%(961)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$92,235
−2%inflation adjusted, since 2000
from $51,719 in 2000
US average: $82,259
1990 – 2024
Per capita income
$43,656
+93%since 2000
from $22,591 in 2000
US average: $44,673
Households earning $100K+
59.7%
+18.8 ptssince 2009
from 40.8% in 2009
US average: 53.3%
Poverty rate
6.0%
+1.2 ptssince 2000
from 4.8% in 2000
US average: 12.5%
Income inequality (Gini)
0.404
+8%since 2010
from 0.373 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade12.2%
US avg: 9.9%
Finance & insurance11.8%
US avg: 5.9%
Information11.7%
US avg: 10.8%
Professional, scientific, technical9.4%
US avg: 5.1%
Wholesale trade8.6%
US avg: 6.9%
Other services4.6%
US avg: 6.7%
Public administration3.7%
US avg: 4.8%
Transportation & warehousing2.9%
US avg: 2.2%
Arts, entertainment, food2.5%
US avg: 1.9%
Education & health services2.4%
US avg: 0.9%
Agriculture, forestry, fishing1.7%
US avg: 1.6%
Construction1.3%
US avg: 1.2%
Manufacturing0.4%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$271,700
+19%inflation adjusted, since 2000
from $125,300 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,177
+7%inflation adjusted, since 2000
from $602 in 2000
US average: $1,442
Owner-occupied
74.4%
+2.0 ptssince 2000
from 72.4% in 2000
25.6% rent
Vacancy rate
3.7%
−4.6 ptssince 2009
from 8.3% in 2009
US average: 10.0%
Owner cost-burdened
20.1%
−5.8 ptssince 2009
from 25.9% in 2009
US average: 22.9%
Renter cost-burdened
38.2%
+3.4 ptssince 2009
from 34.7% in 2009
US average: 47.4%
Afford Score
2.9
+1%since 2009
from 2.9 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
27
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Grundy County on RentDataNow
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)
Diversity Score
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.
Segregation Score
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)
Venezuelan0.2%(130)
Colombian0.1%(54)
Uruguayan0.1%(39)
Cuban0%(4)
Asian origin
Asian Indian0.2%(126)
Filipino0.2%(115)
Chinese0%(18)
Thai0%(13)
Japanese0%(11)
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)
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)
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)
Ethiopian0%(14)
Latvian0%(11)
Kenyan0%(5)
Syrian0%(2)
RANKED:Largest German population · Largest Irish population · Largest Italian population · Largest Polish population · Largest Mexican population
Section 05

Education

Bachelor's degree or higher
23.6%
+8.3 ptssince 2000
from 15.2% in 2000
US average: 35.6%
High school or higher
93.8%
+6.9 ptssince 2000
from 86.9% in 2000
US average: 89.6%
Graduate degree
7.5%
+3.2 ptssince 2000
from 4.3% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
26.8 min
+35%since 2000
from 19.8 min in 2000
US average: 26.5
Drive alone to work
82.1%
−2.8 ptssince 2009
from 84.9% in 2009
US average: 68.9%
Carpooled to work
5.2%
−3.7 ptssince 2009
from 8.9% in 2009
US average: 8.5%
Public transit
0.4%
−0.1 ptssince 2009
from 0.5% in 2009
US average: 3.2%
Worked from home
10.0%
+6.7 ptssince 2009
from 3.3% in 2009
US average: 15.0%
Walked to work
1.4%
−0.2 ptssince 2009
from 1.6% in 2009
US average: 2.4%
Biked to work
0.1%
−0.3 ptssince 2009
from 0.3% in 2009
US average: 0.4%
No vehicle available
4.0%
+0.1 ptssince 2009
from 3.9% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.6%
−5.1 ptssince 2011
from 9.7% in 2011
US average: 5.2%
Labor force participation
67.3%
−2.1 ptssince 2011
from 69.4% in 2011
US average: 63.5%
Self-employed
12.5%
+3.9 ptssince 2009
from 8.5% in 2009
US average: 13.1%
Management & professional
33.9%
−24.5 ptssince 2009
from 58.4% in 2009
US average: 42.5%
Section 08

People & community

Male
50.4%
+0.1 ptssince 2009
from 50.3% in 2009
Female
49.6%
−0.1 ptssince 2009
from 49.7% in 2009
Foreign born
4.1%
+0.9 ptssince 2009
from 3.2% in 2009
US average: 14.1%
Veterans
7.1%
−42.6 ptssince 2009
from 49.6% in 2009
US average: 6.2%
With a disability
9.7%
+0.4 ptssince 2012
from 9.3% in 2012
US average: 13.3%
Uninsured
3.4%
−88.0 ptssince 2013
from 91.4% in 2013
US average: 8.4%
Broadband at home
91.8%
+10.5 ptssince 2017
from 81.3% in 2017
US average: 91.0%
English only at home
91.5%
+0.3 ptssince 2016
from 91.2% in 2016
US average: 77.7%
Spanish at home
6.6%
−0.3 ptssince 2016
from 6.9% in 2016
US average: 13.6%
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
Drill deeper

Places similar to Grundy County

Boone County
Pop 53,568
Garfield County
Pop 63,474
La Plata County
Pop 56,898
Eagle County
Pop 54,291
Places similar to Grundy County
Head to head

Compare Grundy County to nearby counties

GRUNDY COUNTY VS
Kendall County
Income$111,601+21%
Home value$322,400+19%
Population145,470+169%
SEE FULL COMPARISON →
GRUNDY COUNTY VS
Will County
Income$109,984+19%
Home value$319,600+18%
Population712,253+1218%
SEE FULL COMPARISON →
GRUNDY COUNTY VS
LaSalle County
Income$73,045−21%
Home value$161,900−40%
Population107,773+99%
SEE FULL COMPARISON →
GRUNDY COUNTY VS
Livingston County
Income$73,790−20%
Home value$142,200−48%
Population35,057−35%
SEE FULL COMPARISON →
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.

Keep going

Explore from here

10 census tracts
Census Tract 1.02Census Tract 1.03Census Tract 2Census Tract 7Census Tract 4Census Tract 8Census Tract 3Census Tract 9Census Tract 5Census Tract 6
8 ZIP codes
ZIP 60450ZIP 60416ZIP 60424ZIP 60444ZIP 60407ZIP 60479ZIP 60474ZIP 60437
Up the hierarchy
All counties in Illinois
Rankings
Highest income countiesLowest poverty counties

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

How we source and harmonize this data →