Macomb, Illinois

Macomb population, 2020 to 2024

Macomb lost 235 residents from July 2020 to July 2024, a change of -1.6%. In the latest year it moved by -150. Among 330 Illinois places of 5,000 or more, that growth ranks 198th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Macomb is 1.0 times that size.

Macomb covers 10.68 square miles of land and 0.44 of water, for 1,382 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Macomb is less dense than the typical town.

What county Macomb is in

All of Macomb's residents live in McDonough County, which had 26,662 residents in 2024. Macomb holds 55.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Macomb

1 ZIP Code Tabulation Area (ZCTA) overlaps Macomb by at least 10% of the ZCTA's or the city's land: 61455. 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 Macomb is

The Census internal point of Macomb is at 40.470100, -90.683100. Springfield, the capital, is 72.4 miles SE in a straight line. The nearest larger place is Burlington, IA (23,637 people), 32.8 miles away. The nearest city of 100,000 or more is Peoria, IL, 59.2 miles away.

Daylight in Macomb

At 40.47° N, Macomb gets about 15 h 04 min of daylight around the June solstice and 9 h 17 min around the December solstice, a swing of 5 h 47 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Macomb

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Colchester, 6.5 miles away, with 1,082 people.