Henry, Illinois

Henry population, 2020 to 2024

Henry lost 42 residents from July 2020 to July 2024, a change of -1.8%. In the latest year it moved by -22.

Henry covers 1.80 square miles of land and 0.07 of water, for 1,277 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Henry is less dense than the typical town.

What county Henry is in

All of Henry's residents live in Marshall County, which had 11,552 residents in 2024. Henry holds 19.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Henry

1 ZIP Code Tabulation Area (ZCTA) overlaps Henry by at least 10% of the ZCTA's or the city's land: 61537. 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 Henry is

The Census internal point of Henry is at 41.117400, -89.357300. Springfield, the capital, is 93.6 miles S in a straight line. The nearest larger place is Chillicothe, IL (6,052 people), 15.8 miles away. The nearest city of 100,000 or more is Peoria, IL, 28.7 miles away.

Daylight in Henry

At 41.12° N, Henry gets about 15 h 08 min of daylight around the June solstice and 9 h 13 min around the December solstice, a swing of 5 h 56 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Henry

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Lacon, 7.0 miles away, with 1,838 people.