Geneseo, Illinois

Geneseo population, 2020 to 2024

Geneseo lost 40 residents from July 2020 to July 2024, a change of -0.6%. In the latest year it moved by -14. Among 330 Illinois places of 5,000 or more, that growth ranks 152nd; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Geneseo is 44% of it.

Geneseo covers 4.71 square miles of land, for 1,381 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Geneseo is less dense than the typical town.

What county Geneseo is in

All of Geneseo's residents live in Henry County, which had 48,177 residents in 2024. Geneseo holds 13.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Geneseo

1 ZIP Code Tabulation Area (ZCTA) overlaps Geneseo by at least 10% of the ZCTA's or the city's land: 61254. 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 Geneseo is

The Census internal point of Geneseo is at 41.451300, -90.154800. Springfield, the capital, is 118.4 miles SSE in a straight line. The nearest larger place is East Moline, IL (20,995 people), 13.0 miles away. The nearest city of 100,000 or more is Davenport, IA, 24.4 miles away.

Daylight in Geneseo

At 41.45° N, Geneseo gets about 15 h 11 min of daylight around the June solstice and 9 h 11 min around the December solstice, a swing of 6 h 00 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Geneseo

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Colona, 9.3 miles away, with 4,960 people.