Photo: Wisconsin DNR
Interstate is Wisconsin's oldest state park, established in 1900. Located along the picturesque St. Croix National Scenic Riverway, the park provides scenic views of the river and the steep-sided gorge known as the Dalles of the St. Croix. The Ice Age Interpretive Center features a film, photographs, murals and information about Wisconsin's glacial history.
Quick answers
When is the best time to visit Interstate State Park?
It depends on what you came for. Camping is best in June–September, fall color in October, swimming in July–August and boating & paddling in June–September.
What can you do at Interstate State Park in each season?
Winter (December–February): winter camping, hiking, fishing, cross-country skiing and snowshoeing. Spring (March–May): camping, hiking, fishing, biking, rock climbing and hunting. Summer (June–August): camping, hiking, swimming, boating & paddling, fishing, biking, rock climbing and picnics & shelters. Fall (September–November): camping, hiking, fall color, boating & paddling, fishing, biking, rock climbing, hunting and picnics & shelters.
Do you need a state park sticker at Interstate State Park?
Yes. Every motor vehicle that stops at Interstate State Park needs a Wisconsin State Park System vehicle admission sticker, daily or annual (from $13 a day with Wisconsin plates). Our Pass page has every price and which one to buy.
Can you camp at Interstate State Park in winter?
Yes. Winter camping is available at both the group camp and south campground. The group camp is plowed during winter and allows for drive up access to the group camp site.
What state parks and trails are near Interstate State Park?
The closest state properties, as the crow flies: Stower Seven Lakes State Trail (10 mi), Straight Lake State Park (18 mi) and Cattail State Trail (21 mi).
Good for
- Biking
- Boating & paddling
- Camping
- Rock climbing
- Fishing
- Hiking
- Hunting
- Picnics & shelters
- Snowshoeing
- Swimming
- Cross-country skiing
Best months
January · February · May · June · July · August · September · October · November
Visiting
- Admission: A vehicle admission sticker is required.
- Hours: Open 6 a.m. to 11 p.m. year-round.
- Address: 851 State Highway 35 St. Croix Falls, WI 54024
- Phone: 715-483-3747
Accessibility
- Accessible campsite -- every developed campground here has at least one
- Accessible fishing pier
From the DNR's accessibility guide, reviewed October 2026. Call the property to confirm before you go.
Nearby
- Stower Seven Lakes State Trail (10 mi)
- Straight Lake State Park (18 mi)
- Cattail State Trail (21 mi)
- Gandy Dancer State Trail (Southern) (22 mi)
- Willow River State Park (27 mi)
Closures and alerts for Interstate State Park: updates · RSS · JSON Feed
Text and park details on this page come from the property's DNR pages, checked every Monday; last change October 24, 2026. Closures and notices load live. Check current conditions before you go.