Adeline Jay Geo-Karis Illinois Beach State Park stretches 6.5 miles along the sandy shore of Lake Michigan in northern Illinois – offers a full range of recreation opportunities at one of the most unique and beautiful natural settings in America.

Illinois Beach is the only remaining beach ridge shoreline left in the state, with dunes and swales, sprawling marshes, forests of oak, and vast arrays of animal life and vegetation.

More than 650 species of plants have been recorded in the dunes area alone, including dozens of types of colorful wildflowers. Prickly pear cactus thrives in large colonies in the dry areas, and the wet prairies are carpeted with a wide variety of grasses and sedges. Large expanses of marsh in the swales support dense stands of cattail, grasses, big bluestem and sedges.

The sandy ridges are crowned by black oak forests with an open, savanna-like appearance. For much of the year, a stream known as Dead River is blocked by sandbars formed by waves at the mouth of the river, creating a sluggish marshy habitat.

The 4,160-acre park, consisting of two separate areas (North Unit and South Unit), offers ample opportunities for swimming, boating, picnicking, hiking, fishing, camping and simply appreciating nature.


In addition to swimming beaches, trails and campgrounds, the Illinois Beach Resort and Conference Center is the perfect place to get away for a weekend or a weeklong vacation.


Adeline Jay Geo-Karis Illinois Beach State Park
Northeastern Illinois
Lake Front – Park Office
Zion IL 60099



Park Hours
8 am to 8 pm, camping is allowed


How To Get There

From the South are: I-294 north to Rt 173 east (approx 8 miles) to Sheridan Road. Make a right on Sheridan Road to Wadsworth Road, make a left and you will be in the park.

From the North are: I-94 South to Rt. 173, east on Rt.173 to Sheridan Road, right on Sheridan Road to Wadsworth Road and make a left on Wadsworth into the Park.

Contact Details

Phone Number:

Camping reservations can be made online at ExploreMoreIL

Official Website: Adeline Jay Geo-Karis Illinois Beach

*Note: Adeline Jay Geo-Karis Illinois Beach doesn’t have its own social media and FB account. Instead it uses Illionis State Parks for announcement and notices.


Area Attractions

Suggested Equipment for Adeline Jay Geo Karis Illinois Beach State Park Adventures:


The following activities within the park should be done with utmost caution. Make sure that you have the proper protective gear and equipment necessary to make your adventures safe and accident-free. We advise you to read the TIPS underneath each activity to serve as a guide on what you may need to bring in order to enjoy your stay fully.

Activities & Tips



  • While groups of 25 or more are welcome and encouraged to use the park’s facilities, they are required to register in advance with the site office to avoid crowding or scheduling conflicts.
  • At least one responsible adult must accompany each group of 15 minors.
  • Pets must be kept on leashes at all times and clean up after them.

Adeline Jay Geo-Karis Illinois Beach State Park is a must-visit state park in Illinois. Check out other state parks in Illinois here.

Illinois State Parks