Harrisburg, Illinois

Harrisburg population, 2020 to 2024

Harrisburg lost 316 residents from July 2020 to July 2024, a change of -3.8%. In the latest year it moved by -56. Among 330 Illinois places of 5,000 or more, that growth ranks 327th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Harrisburg is 54% of it.

Harrisburg covers 6.61 square miles of land and 0.20 of water, for 1,201 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Harrisburg is less dense than the typical town.

What county Harrisburg is in

All of Harrisburg's residents live in Saline County, which had 22,826 residents in 2024. Harrisburg holds 34.8% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Harrisburg

1 ZIP Code Tabulation Area (ZCTA) overlaps Harrisburg by at least 10% of the ZCTA's or the city's land: 62946. 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 Harrisburg is

The Census internal point of Harrisburg is at 37.737700, -88.545800. Springfield, the capital, is 153.2 miles NNW in a straight line. The nearest larger place is Marion, IL (17,021 people), 21.6 miles away. The nearest city of 100,000 or more is Evansville, IN, 57.8 miles away.

Daylight in Harrisburg

At 37.74° N, Harrisburg gets about 14 h 47 min of daylight around the June solstice and 9 h 33 min around the December solstice, a swing of 5 h 14 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Harrisburg

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Carrier Mills, 5.7 miles away, with 1,600 people.