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.


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.

Jersey County Illinois 2018 Aerial Wall Map
Jerseyville, US
5:24 am, June 9, 2023
few clouds
Wind: 5 mph
Pressure: 1013 mb
Visibility: 10 km
Sunrise: 5:35 am
Sunset: 8:26 pm


8AM – 4PM M–F

200 North Lafayette
Jerseyville, IL 62052

Phone: (618) 498-5571

Please direct all Freedom of Information Act (FOIA) requests to the State’s Attorney’s Office:
201 W. Pearl
Jerseyville, IL 62052
[email protected]

Consumer Product Safety Commission

Illinois Environmental Protection Agency

National Highway Traffic Safety Administration

US Government Information and Services Guide

Better Business Bureau

US Department of State Travel Info

National Council on Aging

Veterans Memory Care

Department of Agriculture

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