Illinois · Census place 1710373
Cahokia Heights, Illinois
Cahokia Heights is a city in St. Clair County, Illinois with an estimated 17,052 residents on July 1, 2024. It is the 150th largest of 651 incorporated places of 1,000+ people in the state.
- Population 2024
- 17,052
- #150 of 651 in Illinois
- Change since 2020
- -4.5%
- -797 people
- Land area
- 15.8 sq mi
- + 0.65 sq mi water
- Density
- 1,081 / sq mi
- State median 2,177
Measure from here
Tools and pages that start from Cahokia Heights
Cahokia Heights population, 2020 to 2024
Cahokia Heights lost 797 residents from July 2020 to July 2024, a change of -4.5%. In the latest year it moved by -144. Among 330 Illinois places of 5,000 or more, that growth ranks 330th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Cahokia Heights is 1.2 times that size.
Cahokia Heights covers 15.78 square miles of land and 0.65 of water, for 1,081 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Cahokia Heights is less dense than the typical town.
What county Cahokia Heights is in
All of Cahokia Heights's residents live in St. Clair County, which had 251,149 residents in 2024. Cahokia Heights holds 6.8% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Cahokia Heights
No ZIP Code Tabulation Area overlaps Cahokia Heights by at least 10% of either area. 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 Cahokia Heights is
The Census internal point of Cahokia Heights is at 38.572100, -90.155300. Springfield, the capital, is 87.8 miles NNE in a straight line. The nearest larger place is East St. Louis, IL (17,808 people), 3.4 miles away. The nearest city of 100,000 or more is St. Louis, MO, 6.5 miles away.
Internal point
- Decimal
- 38.572100, -90.155300
- DMS
- 38°34'19.56"N 90°09'19.08"W
- UTM
- 15N 747827.2E 4273131.5N
- Geohash
- 9yzgkmyfv
- Plus code
- 86CFHRCV+RV
Daylight in Cahokia Heights
At 38.57° N, Cahokia Heights gets about 14 h 52 min of daylight around the June solstice and 9 h 28 min around the December solstice, a swing of 5 h 24 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.
Places near Cahokia Heights
The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is East St. Louis, 3.3 miles away, with 17,808 people.
Questions people ask
What is the population of Cahokia Heights, IL?
17,052 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 797 (4.5%) from 17,849 in July 2020.
What county is Cahokia Heights in?
St. Clair County. All of its residents live in that county.
What ZIP codes cover Cahokia Heights?
No ZCTA overlaps Cahokia Heights by 10% or more of either area in the 2020 relationship file.
How far is Cahokia Heights from Springfield?
87.8 miles (141.3 km) in a straight line, heading NNE from Cahokia Heights.
What is the nearest larger city to Cahokia Heights?
East St. Louis, IL, with 17,808 residents, 3.4 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.