Posen Flag

Posen

County:
Cook County
County Seat:
No
Area (mi²):
1.169
State:
Illinois

Posen is a village located in Cook County, Illinois. Posen has a 2026 population of 5,413. Posen is currently growing at a rate of 0.65% annually but its population has decreased by -2.85% since the most recent census, which recorded a population of 5,572 in 2020.

5.4K
Total Population
4,630
Density (mi²)
35 0.65%
Growth