Knox County, Illinois Population 2024

48,202

Knox County, Illinois's estimated 2024 population is 48,202 with a growth rate of -0.43% in the past year according to the most recent United States census data. Knox County, Illinois is the 30th largest county in Illinois. The 2010 population was 52,911 and has seen a growth of -8.9% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202947,157-209-0.44%
202847,366-209-0.44%
202747,575-209-0.44%
202647,784-209-0.44%
202547,993-209-0.43%
202448,202-209-0.43%
202348,411-209-0.43%
202248,620-690-1.4%
202149,310-480-0.96%
202049,7901210.24%
201949,669-339-0.68%
201850,008-593-1.17%
201750,601-330-0.65%
201650,931-446-0.87%
201551,377-568-1.09%
201451,945-185-0.35%
201352,130-172-0.33%
201252,302-400-0.76%
201152,702-209-0.4%
201052,91100%
199056,393-5,214-8.46%
198061,6073270.53%
197061,28000%
196061,2806,91412.72%
195054,3662,1164.05%
194052,2509141.78%
193051,3364,6099.86%
192046,7275681.23%
191046,1592,5475.84%
190043,6124,86012.54%
189038,7524081.06%
188038,344-1,178-2.98%
187039,52210,85937.89%
186028,66315,384115.85%
185013,2796,21988.09%
18407,0606,7862476.64%
1830274-46,883-99.42%
showing: 37 rows
2024 Growth Rate
-0.43% (-209)
County Website
Knox County
County Seat
2020 Population
49,790
Area
716 mi²
Density
67 people/mi²
Growth Since 2020
-3.19% (-1,588)
Founded
1825

Knox County, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White41,62583.67%
Black or African American4,0558.15%
Two or more races2,2624.55%
Other race1,2752.56%
Asian4991%
Native American350.07%
Native Hawaiian or Pacific Islander00%

White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Knox County, Illinois Population by Race

Knox County, Illinois Population Pyramid 2024

Knox County, Illinois Median Age

42.3

Total

40.8

Male

44.3

Female

Knox County, Illinois Adults

There are 39,814 adults, (10,844 of whom are seniors) in Knox County, Illinois.

Knox County, Illinois Age Dependency

71.7

Age Dependency Ratio

37.4

Old Age Dependency Ratio

34.3

Child Dependency Ratio

Knox County, Illinois Sex Ratio

Female24,45749.16%
Male25,29450.84%

Knox County, Illinois Population by Age

Knox County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All20,7342.268.731.3
Non Family9,0931.145842
Married8,7242.9485.614.4
Female1,9983.2251.248.8
Male9193.452.647.4

2.92

Average Family Size

2.2

Average Household Size

68.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Knox 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

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

Knox 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 native american people with a rate of 92.31%.

The highest rate of bachelors degrees is among native american people with a rate of 23.08%.

Knox County, Illinois Educational Attainment by Race

All

Male

Female

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$38,846

Average Earnings

$46,403

Average Male

$33,248

Average Female

Knox County, Illinois Earnings by Educational Attainment

Knox County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Knox County, Illinois Language

93.59% of Knox County, Illinois residents speak only English, while 6.41% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.77% of the population.

Knox County, Illinois Language

Knox County, Illinois Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White38,6875,08413.14%
Black2,6681,33650.07%
Hispanic2,64054220.53%
Multiple2,12945521.37%
Other1,18842836.03%
Asian2567127.73%
Native31619.35%

16.29%

Overall Poverty Rate

16.2%

Male Poverty Rate

16.38%

Female Poverty Rate

Poverty in Knox County, Illinois

The race most likely to be in poverty in Knox County, Illinois is Black, with 50.07% below the poverty level.

The race least likely to be in poverty in Knox County, Illinois is White, with 13.14% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.19%. Among those working part-time, it was 21.97%, and for those that did not work, the poverty rate was 23.3%.

Knox County, Illinois Poverty

rate

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Rate
Poverty
Less Than 9th Grade35.71%
High School18.05%
Some College11.45%
Bachelors or Greater3.87%

Knox County, Illinois Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed46%
Male Unemployed33.57%
Male Employed9.68%
Female Employed8.29%

Knox County, Illinois Poverty Rate by Employment Status and Sex

Knox County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Knox County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

43.8%

Overall Marriage Rate

42.7%

Male Marriage Rate

45.0%

Female Marriage Rate

Knox County, Illinois Married by Age and Sex

male

female

Knox 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 55-64.

Knox County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Knox County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

2,983

Number of Veterans

2,799

Male Veterans

184

Female Veterans

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Knox County, Illinois Veterans by War

count

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Knox County, Illinois Veterans by Age

count

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Knox County, Illinois Veterans by Race

Knox County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

12.01%

Veteran Poverty Rate

32.23%

Veteran Disability Rate

Knox County, Illinois Veterans by Education

LaborForceParticipation

53.4%

Labor Force Participation

50.7%

Employment Rate

4.9%

Unemployment Rate

Knox County, Illinois Employment by Age

LaborForceParticipation

Knox County, Illinois Employment by Race

LaborForceParticipation

Knox 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

79.12%

Born in Knox County, Illinois

96.66%

Native Born

3.34%

Foreign Born

2.56%

Non Citizen

0.78%

Naturalized

Place of Birth

96.66% of Knox County, Illinois residents were born in the United States, with 79.12% having been born in Illinois. 2.56% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Knox County, Illinois Place of Birth

Sources