Demographics of Kankakee County, Illinois

Kankakee County, Illinois had 105,525 people on July 1, 2025, by the Census Bureau’s estimate: −1,877 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Kankakee County, in four figures

105,525
Population: July 1, 2025, Vintage 2025 estimate.; −1.7%
Change since July 2020: −1,877 people.; 39.0 ±0.5
Median age: ACS 2020–⁠2024.; $71,281 ±$2,921
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Kankakee County, Illinois's population shrank 1.7% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Kankakee County, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Kankakee County, Illinois's population shrank 1.7% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Kankakee County, Illinois's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	107,402	100.0	100.0
2021	106,960	99.6	100.2
2022	105,874	98.6	100.7
2023	105,843	98.5	101.6
2024	105,814	98.5	102.5
2025	105,525	98.3	103.1

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Population of Kankakee County, Illinois on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	107,402	−246	−58	0	−190
2021	106,960	−442	−239	+42	−321
2022	105,874	−1,086	−235	+163	−1,035
2023	105,843	−31	−85	+291	−224
2024	105,814	−29	−151	+418	−285
2025	105,525	−289	−153	+92	−234

Age, 2020–2024

The median age is 39.0 ±0.5: for men 38.2 ±0.5 and for women 40.5 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Kankakee County by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	6,063 ±62	5.7% ±0.1	5.4% ±<0.1	5.6% ±<0.1
5 to 17	18,209 ±629	17.1% ±0.6	16.4% ±0.1	16.3% ±<0.1
18 to 24	10,490 ±467	9.8% ±0.4	9.1% ±<0.1	9.1% ±<0.1
25 to 44	26,235 ±661	24.6% ±0.6	26.9% ±0.1	26.9% ±<0.1
45 to 64	26,608 ±680	25.0% ±0.6	25.2% ±0.1	24.8% ±<0.1
65 and over	19,030 ±783	17.8% ±0.7	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $71,281 ±$2,921, and income per person $36,825 ±$905, in 2024 dollars. The median is $83,390 ±$362 in Illinois and $80,734 ±$166 in the United States.

Households by income

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Households in Kankakee County by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	6,221 ±553	15.2% ±1.3	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	7,776 ±636	19.0% ±1.5	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	7,290 ±652	17.8% ±1.6	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	5,078 ±418	12.4% ±1.0	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	7,506 ±564	18.3% ±1.4	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	3,812 ±458	9.3% ±1.1	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	3,313 ±400	8.1% ±1.0	13.8% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Kankakee County by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	12,498 ±1,033	12.2% ±1.0	11.8% ±0.1	12.5% ±0.1
Under 18	3,636 ±468	15.5% ±1.9	15.1% ±0.2	16.1% ±0.1
18 to 59	6,331 ±590	12.0% ±1.1	11.0% ±0.1	11.6% ±0.1
60 and over	2,531 ±366	9.6% ±1.4	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Kankakee County, ACS 2020–2024
Measure	Kankakee County	Illinois	United States
Housing units	45,415 ±69	5,457,452 ±471	143,775,355 ±10,234
Occupied	90.3% ±1.1	92.3% ±0.1	89.9% ±0.1
Vacant	9.7% ±1.2	7.7% ±0.1	10.1% ±0.1
Owner occupied	69.9% ±1.2	67.1% ±0.3	65.2% ±0.3
Renter occupied	30.1% ±1.5	32.9% ±0.2	34.8% ±0.1
Median home value	$192,600 ±$5,640	$263,300 ±$797	$332,700 ±$236
Median gross rent	$1,097 ±$36	$1,274 ±$5	$1,413 ±$2
Median year built	1972 ±1	1971 ±2	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Kankakee County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	13,523 ±0	12.7% ±<0.1	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	72,459 ±450	68.0% ±0.4	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	15,220 ±542	14.3% ±0.5	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	1,048 ±124	1.0% ±0.1	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 73	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 30	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	364 ±172	0.3% ±0.2	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	3,986 ±711	3.7% ±0.7	3.4% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Kankakee County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	86,082 ±1,018	80.7% ±1.0	66.5% ±0.1	57.3% ±<0.1
Born in another state	13,929 ±958	13.1% ±0.9	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	508 ±166	0.5% ±0.2	1.3% ±<0.1	1.7% ±<0.1
Born abroad	6,116 ±535	5.7% ±0.5	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	3,056 ±417	2.9% ±0.4	7.7% ±0.1	7.4% ±<0.1
Not citizens	3,060 ±453	2.9% ±0.4	7.0% ±0.1	6.8% ±<0.1

Kankakee County among the counties of Illinois

18th of 102 by population, July 2025. Every one is listed on the Illinois page.

Counties of Illinois near Kankakee County in population, July 2025
County	July 2025	Change since 2020
McLean County	171,419	+0.1%
Kendall County	145,470	+9.9%
Rock Island County	141,869	−1.7%
Tazewell County	130,049	−1.0%
LaSalle County	107,773	−1.5%
Kankakee County	105,525	−1.7%
DeKalb County	101,835	+1.5%
Macon County	99,300	−4.3%
Vermilion County	71,259	−3.7%
Williamson County	67,225	+0.1%
Adams County	64,267	−2.1%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026