Illinois · Census place 1704845
Belleville, Illinois
Belleville is a city in St. Clair County, Illinois with an estimated 40,560 residents on July 1, 2024. It is the 40th largest of 651 incorporated places of 1,000+ people in the state.
- Population 2024
- 40,560
- #40 of 651 in Illinois
- Change since 2020
- -4.1%
- -1,718 people
- Land area
- 23.3 sq mi
- + 0.26 sq mi water
- Density
- 1,745 / sq mi
- State median 2,177
Measure from here
Tools and pages that start from Belleville
Belleville population, 2020 to 2024
Belleville lost 1,718 residents from July 2020 to July 2024, a change of -4.1%. In the latest year it moved by -316. Among 330 Illinois places of 5,000 or more, that growth ranks 329th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Belleville is 2.7 times that size.
Belleville covers 23.25 square miles of land and 0.26 of water, for 1,745 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Belleville is less dense than the typical town.
What county Belleville is in
All of Belleville's residents live in St. Clair County, which had 251,149 residents in 2024. Belleville holds 16.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Belleville
4 ZIP Code Tabulation Areas (ZCTAs) overlap Belleville by at least 10% of the ZCTA's or the city's land: 62220, 62221, 62223, 62226. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Belleville is
The Census internal point of Belleville is at 38.516000, -89.989800. Springfield, the capital, is 89.3 miles NNE in a straight line. The nearest larger place is St. Louis, MO (279,695 people), 16.0 miles away.
Internal point
- Decimal
- 38.516000, -89.989800
- DMS
- 38°30'57.60"N 89°59'23.28"W
- UTM
- 16N 239326.7E 4267306.3N
- Geohash
- dnb505x7v
- Plus code
- 86CGG286+93
Daylight in Belleville
At 38.52° N, Belleville gets about 14 h 52 min of daylight around the June solstice and 9 h 29 min around the December solstice, a swing of 5 h 23 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.
Places near Belleville
The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Swansea, 2.5 miles away, with 14,445 people.
Questions people ask
What is the population of Belleville, IL?
40,560 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 1,718 (4.1%) from 42,278 in July 2020.
What county is Belleville in?
St. Clair County. All of its residents live in that county.
What ZIP codes cover Belleville?
4 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 62220, 62221, 62223, 62226.
How far is Belleville from Springfield?
89.3 miles (143.7 km) in a straight line, heading NNE from Belleville.
What is the nearest larger city to Belleville?
St. Louis, MO, with 279,695 residents, 16.0 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
How every number is computed: methodology. Spotted a wrong figure? Report an error.