Fee: Vehicle admission sticker required: WI plates $13 day / $28 annual; out-of-state $16 day / $50 annual. Camping rates vary by residency, site type and season. Reservations: Wisconsin DNR reservation system
About this park
Interstate is Wisconsin's oldest state park, established in 1900, on the St. Croix National Scenic Riverway. It has views of the river and the steep-sided gorge known as the Dalles of the St. Croix, plus an Ice Age Interpretive Center. The park is open 6 a.m. to 11 p.m. year round.
Interstate State Park FAQ
Where is Interstate State Park located?
Interstate State Park is in St. Croix Falls, Wisconsin, at 851 State Highway 35. GPS coordinates: 45.3954, -92.6405. Get directions.
Is there an entrance fee at Interstate State Park?
Vehicle admission sticker required: WI plates $13 day / $28 annual; out-of-state $16 day / $50 annual. Camping rates vary by residency, site type and season. Reservations: Wisconsin DNR reservation system. Fees can change by season, so confirm with the park before you go.
How do I contact Interstate State Park?
You can call (715) 483-3747. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Interstate State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Moose Lake (89.2 mi, reservable)
- Black Lake (91.8 mi, reservable)
- Chippewa (94.8 mi, reservable)
How current is this information about Interstate State Park?
This listing was last updated on October 8, 2026. If something is out of date, let us know and we'll fix it.