COUNTY · 1990 CENSUS

Grundy County

Illinois · 32,337 residents · 418 sq mi

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Grundy County is home to 32,337 people in Illinois. 13% of adults hold a bachelor's degree or higher. Poverty is uncommon here, at 6.6% of locals. Owners hold 70% of the housing stock. Median home value sits at $71,300. There are 5,198 fewer people here than in 2000.

At a glance

Wealthier

above the US median

US median: $30,130

Mid-age

median age 33.3

US median: 33.0

Less educated

13% hold a bachelor's degree

US average: 20%

More affordable

home values down 25%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

32,337

−14%vs 2000

vs 37,535 in 2000

1990 – 2025

Median age

33.3

−8%vs 2000

vs 36.3 in 2000

US average: 33.0

Land area

418 sq mi

Population, 1990 – 2024

202453K

Age distribution, 1990

Under 57.3%(2,361)

US avg: 7.3%

5 to 97.8%(2,518)

US avg: 7.3%

10 to 148%(2,577)

US avg: 6.9%

15 to 197.2%(2,344)

US avg: 7.1%

20 to 246.2%(1,996)

US avg: 7.5%

25 to 3416.5%(5,322)

US avg: 17.5%

35 to 4415%(4,843)

US avg: 15.1%

45 to 5411%(3,561)

US avg: 10.2%

55 to 648.2%(2,638)

US avg: 8.5%

65 to 747.4%(2,396)

US avg: 7.3%

75 to 844.4%(1,409)

US avg: 4%

85 and over1.2%(372)

US avg: 1.2%

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Section 02

Income & economy

Median household income

$35,728

−9%inflation adjusted, since 2000

vs $51,719 in 2000

US average: $30,130

1990 – 2024

Per capita income

$14,474

−36%vs 2000

vs $22,591 in 2000

US average: $14,340

Poverty rate

6.6%

+1.8 ptsvs 2000

vs 4.8% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$71,300

−25%inflation adjusted, since 2000

vs $125,300 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$410

−10%inflation adjusted, since 2000

vs $602 in 2000

US average: $450

Owner-occupied

69.8%

−2.6 ptsvs 2000

vs 72.4% in 2000

30.2% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic94.6%(35,502)

Black0.2%(67)

Hispanic / Latino4.1%(1,552)

Asian0.3%(112)

Other0%

1990

White, non-Hispanic98.5%(31,858)

Black0%(11)

Hispanic / Latino2.5%(801)

Asian0.3%(91)

Other1.2%(377)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

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)

RANKED:Largest German population · Largest Irish population · Largest Italian population · Largest Polish population · Largest Mexican population

Section 05

Education

Bachelor's degree or higher

12.5%

−2.7 ptsvs 2000

vs 15.2% in 2000

US average: 20.3%

High school or higher

79.0%

−7.9 ptsvs 2000

vs 86.9% in 2000

US average: 75.2%

Graduate degree

3.9%

−0.4 ptsvs 2000

vs 4.3% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

22.2 min

+12%vs 2000

vs 19.8 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.

Marital status (2024)

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

Showing 2024 (the nearest year with coverage data).

Uninsured

3.4%

−5.2 ptssince 2013

from 8.6% in 2013

US average: 8.4%

Employer-based

68.8%

−1.9 ptssince 2020

from 70.7% in 2020

US average: 54.8%

Direct-purchase

13.9%

+2.5 ptssince 2020

from 11.4% in 2020

US average: 13.8%

Medicare

15.5%

+0.5 ptssince 2020

from 15.0% in 2020

US average: 18.4%

Medicaid

13.9%

−0.1 ptssince 2020

from 14.0% in 2020

US average: 20.9%

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)

US avg: 26.4%

Gulf War (1990s)22%(627)

US avg: 24.3%

Vietnam era30.2%(861)

US avg: 33.1%

Korean War1.8%(51)

US avg: 4.5%

World War II0%(1)

US avg: 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.

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