Collinsville, Illinois

Collinsville population, 2020 to 2024

Collinsville lost 602 residents from July 2020 to July 2024, a change of -2.5%. In the latest year it moved by -114. Among 330 Illinois places of 5,000 or more, that growth ranks 249th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Collinsville is 1.6 times that size.

Collinsville covers 15.41 square miles of land and 0.19 of water, for 1,542 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Collinsville is less dense than the typical town.

The 2 counties Collinsville spans

Collinsville crosses county lines. The Census county-part estimates split its 23,766 residents as follows; Madison County holds 89.2% of them. The shaded shapes are on the map above; dots mark the eight nearest places.

ZIP codes in Collinsville

1 ZIP Code Tabulation Area (ZCTA) overlaps Collinsville by at least 10% of the ZCTA's or the city's land: 62234. 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 Collinsville is

The Census internal point of Collinsville is at 38.675700, -90.005800. Springfield, the capital, is 78.7 miles NNE in a straight line. The nearest larger place is O'Fallon, IL (32,169 people), 7.1 miles away. The nearest city of 100,000 or more is St. Louis, MO, 13.2 miles away.

Daylight in Collinsville

At 38.68° N, Collinsville gets about 14 h 53 min of daylight around the June solstice and 9 h 28 min around the December solstice, a swing of 5 h 25 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Collinsville

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Caseyville, 3.6 miles away, with 4,395 people.