Jersey County, county in Illinois, United States. As of 2020 county had an estimated population of 21,616 inhabitants. The county was created 182 years ago in 1839. Its county seat is "Jerseyville".
There are 1 city/town in Jersey County, IL. The largest city of Jersey County is Otterville with a population of 116.
Otterville, town of the United States
Cities, Towns, Neighborhoods & Other Populated Places in Jersey County.
|Otterville||Town of the United States||Jersey||116|