Posen, Illinois

Posen population, 2020 to 2024

Posen lost 159 residents from July 2020 to July 2024, a change of -2.9%. In the latest year it moved by +35. Among 330 Illinois places of 5,000 or more, that growth ranks 282nd; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Posen is 37% of it.

Posen covers 1.17 square miles of land, for 4,626 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Posen is denser than the typical town.

What county Posen is in

All of Posen's residents live in Cook County, which had 5,182,617 residents in 2024. Posen holds 0.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Posen

1 ZIP Code Tabulation Area (ZCTA) overlaps Posen by at least 10% of the ZCTA's or the village's land: 60469. 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 Posen is

The Census internal point of Posen is at 41.629100, -87.685800. Springfield, the capital, is 164.0 miles SW in a straight line. The nearest larger place is Blue Island, IL (21,805 people), 2.0 miles away. The nearest city of 100,000 or more is Chicago, IL, 14.4 miles away.

Daylight in Posen

At 41.63° N, Posen gets about 15 h 12 min of daylight around the June solstice and 9 h 09 min around the December solstice, a swing of 6 h 03 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Posen

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Dixmoor, 1.0 miles away, with 2,944 people.