Algonquin, Illinois

Algonquin population, 2020 to 2024

Algonquin added 860 residents from July 2020 to July 2024, a change of +2.9%. In the latest year it moved by +327. Among 330 Illinois places of 5,000 or more, that growth ranks 35th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Algonquin is 2.1 times that size.

Algonquin covers 12.52 square miles of land and 0.20 of water, for 2,439 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Algonquin is denser than the typical town.

The 2 counties Algonquin spans

Algonquin crosses county lines. The Census county-part estimates split its 30,539 residents as follows; McHenry County holds 72.5% of them. The shaded shapes are on the map above; dots mark the eight nearest places.

ZIP codes in Algonquin

1 ZIP Code Tabulation Area (ZCTA) overlaps Algonquin by at least 10% of the ZCTA's or the village's land: 60102. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a village that annexed land after 2020 may reach into ZIP codes not listed here.

Where Algonquin is

The Census internal point of Algonquin is at 42.159500, -88.321900. Springfield, the capital, is 178.3 miles SSW in a straight line. The nearest larger place is Carpentersville, IL (37,144 people), 2.9 miles away. The nearest city of 100,000 or more is Elgin, IL, 8.3 miles away.

Daylight in Algonquin

At 42.16° N, Algonquin gets about 15 h 16 min of daylight around the June solstice and 9 h 06 min around the December solstice, a swing of 6 h 10 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Algonquin

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Lake in the Hills, 1.4 miles away, with 28,706 people.