Bethalto, Illinois

Bethalto population, 2020 to 2024

Bethalto lost 128 residents from July 2020 to July 2024, a change of -1.4%. In the latest year it moved by -15. Among 330 Illinois places of 5,000 or more, that growth ranks 188th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Bethalto is 62% of it.

Bethalto covers 7.59 square miles of land and 0.05 of water, for 1,210 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Bethalto is less dense than the typical town.

What county Bethalto is in

All of Bethalto's residents live in Madison County, which had 263,017 residents in 2024. Bethalto holds 3.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Bethalto

2 ZIP Code Tabulation Areas (ZCTAs) overlap Bethalto by at least 10% of the ZCTA's or the village's land: 62010, 62018. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a village that annexed land after 2020 may reach into ZIP codes not listed here.

Where Bethalto is

The Census internal point of Bethalto is at 38.901700, -90.044800. Springfield, the capital, is 64.3 miles NNE in a straight line. The nearest larger place is Wood River, IL (10,251 people), 3.2 miles away. The nearest city of 100,000 or more is St. Louis, MO, 21.3 miles away.

Daylight in Bethalto

At 38.90° N, Bethalto gets about 14 h 54 min of daylight around the June solstice and 9 h 26 min around the December solstice, a swing of 5 h 28 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Bethalto

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Wood River, 3.2 miles away, with 10,251 people.