Fee: Day use: $7/vehicle (WY residents), $12/vehicle (non-residents). Camping: base $10 residents / $18 non-residents plus day-use fee and tax; electric sites +$10/night. Annual day-use pass $48 residents / $96 non-residents. Reservations: reserve.wyoming.gov or 1-877-996-7275
About this park
Seminoe State Park is on the northwest side of Seminoe Reservoir, surrounded by the Seminoe Mountains, where prospectors hunted for gold in the late 1800s. The name is often assumed to come from the Seminole tribe but is an Americanized spelling of Cimineau, after the French trapper Basil Cimineau Lajeunesse. The park was established in 1965 through an agreement between the U.S. Bureau of Reclamation and the Wyoming Recreation Commission. The park is open 24/7, all year. Campsite reservations are required from May 15 to September 15, and fee kiosks at each entrance handle day use and winter camping (they cannot make reservations).
Seminoe State Park FAQ
Where is Seminoe State Park located?
Seminoe State Park is in Sinclair, Wyoming, at County Road 351. GPS coordinates: 42.1236, -106.8989. Get directions.
Is there an entrance fee at Seminoe State Park?
Day use: $7/vehicle (WY residents), $12/vehicle (non-residents). Camping: base $10 residents / $18 non-residents plus day-use fee and tax; electric sites +$10/night. Annual day-use pass $48 residents / $96 non-residents. Reservations: reserve.wyoming.gov or 1-877-996-7275. Fees can change by season, so confirm with the park before you go.
How do I contact Seminoe State Park?
You can call (307) 320-3013. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Seminoe State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Ryan Park (59.0 mi, reservable)
- Hog Park Campground (75.9 mi, reservable)
- Big Creek Lakes Campground (83.4 mi, reservable)
How current is this information about Seminoe 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 If something is out of date, let us know and we'll fix it.