2025 Reservation Season: May 1 – September 30
New for 2025, some parks are adjusting their reservation seasons to better align with visitation,
staffing, and availability (see 'Reservation Season Dates' below for more information).
Also note that some of our rental units such as cabins, yurts, etc. may be available year-round, at RESERVE.WYOMING.GOV
Book Online 24/7: RESERVE.WYOMING.GOV
Booking by Phone: 877-WYO-PARK {877-996-7275}
The call center has new extended hours! They are available 7 a.m. - 7 p.m. daily.
Reservation Season Dates:
Outside of reservation season, all sites remain open and are first-come, first-served.
Just pick an empty spot and enjoy!
- Boysen State Park: May 15 - September 15
- Buffalo Bill State Park: May 1 - September 30
- Curt Gowdy State Park: May 15 - September 30
- Glendo State Park: May 15 - September 15 (Elkhorn Campground is May 15 - July 15)
- Guernsey State Park: May 15 - September 15
- Keyhole State Park: May 15 - September 15
- Medicine Lodge State Archaeological Site: May 1 - September 30
- Seminoe State Park: May 15 - September 15
- Sinks Canyon State Park: May 1 - September 30
Bookings Open:
New inventory is released daily at 1:00 a.m. Mountain Time.
Wyoming residents may begin booking campsites up to 120 days prior to arrival. Non-residents may begin booking up to 113 days prior to arrival. Check out this downloadable booking calendar that shows the earliest dates to book.
Reservation Fees: Residents = $4 Non-Residents = $8
Fee Payment: Fees for day use and camping are charged per vehicle. A reservation pays for only one vehicle and any additional vehicles must pay on arrival at a booth or self-pay station.
Refund Policy: Full refunds (minus the reservation fee) will be offered for cancellations made on or before the day of arrival. No refunds will be given for unused days/nights if a visitor leaves early. Annual permits are non-refundable. Reservation fees are non-refundable.
Check-In/Check-Out: Check-in is required upon arrival. Check-in is after 3:00 pm, check out is before 11:00 am. For late arrivals, contact the park at least 12 hours prior to arrival.
No-Show Reservations Cancelled: If someone doesn’t show up for their reservation by 11 am the day following arrival (no-show), their reservation is not automatically cancelled. Wyo Parks staff have to physically visit the site to confirm it is empty then go into the system to cancel the reservation. This requires staff time and delays the site becoming available for others! Please be courteous and cancel your reservation if you won’t use it.
No-Show Penalties: When a customer doesn't arrive to their site by 11 am the day following their scheduled arrival, they are considered a 'no-show'. If you aren't able to use your reservation, please cancel so another family has the opportunity to enjoy the site.
Repeat offenders are tracked in the system, and the following penalties may be applied:
- 1st and 2nd No-Show: Reservation cancelled (with no refund)
- 3rd No-Show: All reservations for the year cancelled (with no refunds)
- 4 or more: Suspension of reservation privileges
18-Day Holds
To prevent users from circumventing the booking rules (sliding reservations forward), an 18-day hold on date changes will apply to reservations made at the maximum booking date of 120/113 days before arrival. After the 18th day, date changes will be permitted as usual.
First-Come, First-Served Campsites
During the reservation season, most campsites require reservations. However, there are some first-come, first-served (aka 'walk in') sites at most locations.
Other Important Information
- Sites must be occupied nightly.
- There is a 14-day camping limit in any 30-day period at any state park. This is a ‘rolling’ 30-day period so any number of stays totaling over 14 days within 30 days of each other (at the same park) is not permitted.
- Dogs must be on leashes when outside of a vehicle or camping unit.
- Visitor fees are vital to Wyo Parks! 100% of the revenue collected through visitor fees goes right back to parks and sites to fund new construction, improvement projects, site interpretation, and maintenance.
