Illinois’s Smallest County Shrunk Yet Again
Illinois's least populated county recently experienced another population drop.
Hardin County
Illinois Has 102 Counties–Here’s The Smallest One
Winnebago County is the 7th largest county in Illinois by population, with 283,366 residents, Boone County is 25th, with 53,304 people. Ogle County is 28th with 51,446 residents.