Grundy County, Illinois Population 2024

53,265

Grundy County, Illinois's estimated 2024 population is 53,265 with a growth rate of 0.21% in the past year according to the most recent United States census data. Grundy County, Illinois is the 25th largest county in Illinois. The 2010 population was 50,155 and has seen a growth of 6.2% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202953,8251120.21%
202853,7131120.21%
202753,6011120.21%
202653,4891120.21%
202553,3771120.21%
202453,2651120.21%
202353,1531120.21%
202253,0411120.21%
202152,9294120.78%
202052,5171,4862.91%
201951,031190.04%
201851,0123850.76%
201750,6273020.6%
201650,325-33-0.07%
201550,358770.15%
201450,281980.2%
201350,183220.04%
201250,161580.12%
201150,103-52-0.1%
201050,15500%
199032,3371,7555.74%
198030,5824,04715.25%
197026,5354,18518.72%
196022,3503,13316.3%
195019,2178194.45%
194018,398-280-1.5%
193018,678980.53%
192018,580-5,582-23.1%
191024,162260.11%
190024,1363,11214.8%
189021,0244,29225.65%
188016,7321,79412.01%
187014,9384,55943.93%
186010,3797,356243.33%
18503,023-50,802-94.38%
showing: 35 rows
2024 Growth Rate
0.21% (112)
County Seat
2020 Population
52,517
Area
418 mi²
Density
127 people/mi²
Growth Since 2020
1.42% (748)
Founded
February 17, 1841

Grundy County, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White47,69390.63%
Two or more races2,0403.88%
Other race1,5722.99%
Black or African American9541.81%
Asian3140.6%
Native American510.1%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Grundy County, Illinois Population by Race

Grundy County, Illinois Population Pyramid 2024

Grundy County, Illinois Median Age

38.8

Total

37.9

Male

39.6

Female

Grundy County, Illinois Adults

There are 39,640 adults, (7,564 of whom are seniors) in Grundy County, Illinois.

Grundy County, Illinois Age Dependency

64.1

Age Dependency Ratio

23.6

Old Age Dependency Ratio

40.5

Child Dependency Ratio

Grundy County, Illinois Sex Ratio

Female25,92249.26%
Male26,70250.74%

Grundy County, Illinois Population by Age

Grundy County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All20,3762.5675.824.2
Married11,0583.2386.813.2
Non Family6,4961.2160.339.7
Female1,6512.9863.536.5
Male1,1713.1775.424.6

3.13

Average Family Size

2.56

Average Household Size

75.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Grundy County, Illinois Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Grundy County, Illinois Educational Attainment by Sex (over 25)

Grundy County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 95.62%.

The highest rate of bachelors degrees is among asian people with a rate of 76.25%.

Grundy County, Illinois Educational Attainment by Race

All

Male

Female

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$57,209

Average Earnings

$72,984

Average Male

$41,426

Average Female

Grundy County, Illinois Earnings by Educational Attainment

Grundy County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Grundy County, Illinois Language

92.98% of Grundy County, Illinois residents speak only English, while 7.02% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.18% of the population.

Grundy County, Illinois Language

Grundy County, Illinois Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White43,8562,3065.26%
Hispanic5,7324447.75%
Other1,56922114.09%
Multiple1,9951939.67%
Black91217619.3%
Native51815.69%
Asian31451.59%

5.98%

Overall Poverty Rate

4.98%

Male Poverty Rate

7%

Female Poverty Rate

Poverty in Grundy County, Illinois

The race most likely to be in poverty in Grundy County, Illinois is Black, with 19.3% below the poverty level.

The race least likely to be in poverty in Grundy County, Illinois is Asian, with 1.59% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.58%. Among those working part-time, it was 8.13%, and for those that did not work, the poverty rate was 9%.

Grundy County, Illinois Poverty

rate

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Rate
Poverty
Less Than 9th Grade14.59%
High School6.89%
Some College4.61%
Bachelors or Greater1.15%

Grundy County, Illinois Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed19.8%
Male Unemployed9.74%
Female Employed4.07%
Male Employed2.84%

Grundy County, Illinois Poverty Rate by Employment Status and Sex

Grundy County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Grundy County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

54.3%

Overall Marriage Rate

54.5%

Male Marriage Rate

54.2%

Female Marriage Rate

Grundy County, Illinois Married by Age and Sex

male

female

Grundy County, Illinois Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Grundy County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Grundy County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

3,235

Number of Veterans

3,026

Male Veterans

209

Female Veterans

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Grundy County, Illinois Veterans by War

count

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Grundy County, Illinois Veterans by Age

count

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Grundy County, Illinois Veterans by Race

Grundy County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

1.69%

Veteran Poverty Rate

17.66%

Veteran Disability Rate

Grundy County, Illinois Veterans by Education

LaborForceParticipation

68.1%

Labor Force Participation

65.2%

Employment Rate

4.2%

Unemployment Rate

Grundy County, Illinois Employment by Age

LaborForceParticipation

Grundy County, Illinois Employment by Race

LaborForceParticipation

Grundy County, Illinois Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

82.48%

Born in Grundy County, Illinois

95.99%

Native Born

4.01%

Foreign Born

1.34%

Non Citizen

2.67%

Naturalized

Place of Birth

95.99% of Grundy County, Illinois residents were born in the United States, with 82.48% having been born in Illinois. 1.34% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Grundy County, Illinois Place of Birth

Sources