WELCOME TO JERSEY COUNTY

Located to the north of St. Louis on US 67, Jersey County covers over 240,000 acres and is predominately rural. Jerseyville, the county seat, is the largest municipality and offers shopping, restaurants, recreation, and a friendly atmosphere for visitors. Grafton, a tourist town along the river, is the second largest municipality and is located on Illinois 100, part of the National Scenic Byway called The Great River Road. The Mississippi River delineates the southern edge of the county and the Illinois River along much of the western edge. The bluffs of Pere Marquette State Park overlook the confluence of the Mississippi, Illinois, and Missouri Rivers.

ANNOUNCEMENTS

- Due to the COVID-19 crisis, the recycling program will be closed until further notice. As always, we will do our best to serve your needs. Please feel free to call our office
- NEW for 2026, the maximum income limit for the Illinois Senior Citizens Assessment Freeze Homestead Exemption is set at $75,000 for the 2025 income.
Final 2021 Mitigation Plan
IAFSM Award
THE MARVELOUS ADVENTURES OF COUNTYLAND an innovative children’s book
Opposition to the National Park

Mission Statement:

The County Officials of Jersey County are committed to providing the highest quality services in a fiscally responsible manner to promote the health, safety, and general welfare of all Jersey County residents. Our guiding principles will be honesty and integrity, community service, fiscal responsibility, and respect for others.

In 2019, the Illinois General Assembly passed Public Act 101-0504. The law requires IMRF to post certain employer cost and participation information on its website. IMRF will update these reports annually.