Demographics of Belleville city, Illinois

Belleville city, Illinois had 40,237 people on July 1, 2025, by the Census Bureau’s estimate: −2,014 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Belleville city, in four figures

40,237
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 41,370 ±45.; −4.8%
Change since July 2020: −2,014 people.; 39.1 ±1.1
Median age: ACS 2020–⁠2024.; $63,535 ±$3,030
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Belleville city, Illinois's population shrank 4.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Belleville city, 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).

Source: The Census Bureau

About this chart

The figures

Belleville city, Illinois's population shrank 4.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Belleville city, 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	42,251	100.0	100.0
2021	41,822	99.0	100.2
2022	41,279	97.7	100.7
2023	40,828	96.6	101.6
2024	40,542	96.0	102.5
2025	40,237	95.2	103.1

Population of Belleville city, Illinois on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	42,251	—
2021	41,822	−429
2022	41,279	−543
2023	40,828	−451
2024	40,542	−286
2025	40,237	−305

Age, 2020–2024

The median age is 39.1 ±1.1: for men 38.6 ±1.5 and for women 39.6 ±1.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Belleville city by age, ACS 2020–2024
Age	People	Share	Illinois	United States
Under 5	1,935 ±295	4.7% ±0.7	5.4% ±<0.1	5.6% ±<0.1
5 to 17	7,394 ±710	17.9% ±1.7	16.4% ±0.1	16.3% ±<0.1
18 to 24	3,011 ±509	7.3% ±1.2	9.1% ±<0.1	9.1% ±<0.1
25 to 44	12,056 ±835	29.1% ±2.0	26.9% ±0.1	26.9% ±<0.1
45 to 64	10,206 ±754	24.7% ±1.8	25.2% ±0.1	24.8% ±<0.1
65 and over	6,768 ±602	16.4% ±1.5	17.0% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $63,535 ±$3,030, and income per person $34,085 ±$2,059, 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 Belleville city by income, ACS 2020–2024
Household income	Households	Share	Illinois	United States
Under $25,000	3,583 ±567	20.3% ±3.1	14.6% ±0.1	14.6% ±<0.1
$25,000 to $49,999	3,647 ±535	20.7% ±2.9	16.0% ±0.2	16.7% ±<0.1
$50,000 to $74,999	3,037 ±484	17.2% ±2.7	14.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	2,769 ±486	15.7% ±2.7	12.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	2,717 ±345	15.4% ±1.9	18.0% ±0.2	17.5% ±<0.1
$150,000 to $199,999	1,111 ±248	6.3% ±1.4	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	782 ±188	4.4% ±1.1	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 Belleville city by age, ACS 2020–2024
Age	Below poverty	Rate	Illinois	United States
All ages	5,797 ±856	14.6% ±2.2	11.8% ±0.1	12.5% ±0.1
Under 18	1,480 ±370	16.2% ±3.8	15.1% ±0.2	16.1% ±0.1
18 to 59	2,863 ±573	13.3% ±2.6	11.0% ±0.1	11.6% ±0.1
60 and over	1,454 ±356	16.4% ±3.7	10.6% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Belleville city, ACS 2020–2024
Measure	Belleville city	Illinois	United States
Housing units	20,212 ±623	5,457,452 ±471	143,775,355 ±10,234
Occupied	87.3% ±1.4	92.3% ±0.1	89.9% ±0.1
Vacant	12.7% ±2.1	7.7% ±0.1	10.1% ±0.1
Owner occupied	60.1% ±2.8	67.1% ±0.3	65.2% ±0.3
Renter occupied	39.9% ±3.6	32.9% ±0.2	34.8% ±0.1
Median home value	$141,300 ±$8,490	$263,300 ±$797	$332,700 ±$236
Median gross rent	$1,019 ±$48	$1,274 ±$5	$1,413 ±$2
Median year built	1962 ±2	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 Belleville city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Illinois	United States
Hispanic or Latino	1,208 ±391	2.9% ±0.9	18.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	23,455 ±994	56.7% ±2.4	58.1% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	13,457 ±993	32.5% ±2.4	13.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	428 ±196	1.0% ±0.5	5.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 50	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 90	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	30 to 294	0.1% to 0.7%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	2,604 ±613	6.3% ±1.5	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 Belleville city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Illinois	United States
Born in the state	26,413 ±1,067	63.8% ±2.6	66.5% ±0.1	57.3% ±<0.1
Born in another state	13,398 ±1,055	32.4% ±2.5	17.5% ±0.1	26.9% ±<0.1
Born a citizen outside the states	361 ±138	0.9% ±0.3	1.3% ±<0.1	1.7% ±<0.1
Born abroad	1,198 ±323	2.9% ±0.8	14.7% ±0.1	14.1% ±<0.1
Naturalized citizens	817 ±287	2.0% ±0.7	7.7% ±0.1	7.4% ±<0.1
Not citizens	381 ±172	0.9% ±0.4	7.0% ±0.1	6.8% ±<0.1

Belleville city among the places of Illinois

37th of 337 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Illinois page.

Places of Illinois near Belleville city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Plainfield village	46,708 ±218
Elmhurst city	45,671 ±45
Lombard village	43,619 ±334
Buffalo Grove village	42,891 ±67
Moline city	42,197 ±364
Belleville city	41,370 ±45
Romeoville village	41,152 ±75
Crystal Lake city	40,579 ±208
Bartlett village	40,501 ±76
DeKalb city	40,443 ±215
Carol Stream village	39,460 ±99

Elsewhere on the site

Reported crime in Belleville city, Illinois

Rankings this appears in

No. 29 Places in Illinois by poverty rate
No. 81 Places in Illinois by median age
No. 182 Places in Illinois by per capita income
No. 190 Places in Illinois by median rent
No. 198 Places in Illinois by median household income
No. 211 Places in Illinois by foreign-born share

Sources

Census Bureau population estimates — incorporated places and New England towns — 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

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026