McHenry, Illinois

McHenry population, 2020 to 2024

McHenry added 1,476 residents from July 2020 to July 2024, a change of +5.4%. In the latest year it moved by +523. Among 330 Illinois places of 5,000 or more, that growth ranks 18th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so McHenry is 2.0 times that size.

McHenry covers 14.83 square miles of land and 0.42 of water, for 1,944 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so McHenry is less dense than the typical town.

What county McHenry is in

All of McHenry's residents live in McHenry County, which had 315,959 residents in 2024. McHenry holds 9.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in McHenry

1 ZIP Code Tabulation Area (ZCTA) overlaps McHenry by at least 10% of the ZCTA's or the city's land: 60050. 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 McHenry is

The Census internal point of McHenry is at 42.336200, -88.291700. Springfield, the capital, is 190.2 miles SSW in a straight line. The nearest larger place is Crystal Lake, IL (41,513 people), 7.5 miles away. The nearest city of 100,000 or more is Elgin, IL, 20.6 miles away.

Daylight in McHenry

At 42.34° N, McHenry gets about 15 h 17 min of daylight around the June solstice and 9 h 05 min around the December solstice, a swing of 6 h 12 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near McHenry

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Bull Valley, 3.6 miles away, with 1,136 people.