Post Oak Park
Sold out? Sites at Post Oak Park open up when campers cancel.
Campsite Tonight watches Recreation.gov 24/7 and adds an open site to your cart automatically — you just check out.
About Post Oak Park
Post Oak Park is a national park campground at Copan Lake in Washington County, Oklahoma. Reservations are managed through Recreation.gov. When a booked site here is cancelled it can vanish within minutes, so Campsite Tonight monitors it 24/7 and auto-adds the opening to your Recreation.gov cart before anyone else.
Post Oak Park is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.
The campground accommodates RVs and trailers up to 83 ft. Campers rate it 4.0/5 across 96 reviews.
Other campgrounds at Copan Lake include Copan Point and Washington Cove.
Total reservations in April — 2023: 113 · 2024: 95 · 2025: 82
Location
Address
Copan, Oklahoma
Coordinates
36.8975, -95.9697
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
- •June sees 136 reservations - book early or set cancellation alerts.
Nearby Campgrounds
Photos
Post Oak Park FAQ
How far in advance should I book Post Oak Park?
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open. Mark your calendar for when the booking window opens (typically 5-6 months ahead). Also set alerts - cancellations do happen.
What is the busiest time at Post Oak Park?
June typically sees the highest reservation activity at Post Oak Park. During peak times, 100% of reservations are made 2+ weeks in advance.
Are there campsites available at Post Oak Park right now?
Post Oak Park is currently fully booked for the next 14 days. However, cancellations happen frequently - download the Campsite Tonight app to get instant alerts when sites become available.
Where is Post Oak Park located?
Post Oak Park is located in Copan Lake, near Copan, Oklahoma.
Track Availability at Post Oak Park
Get instant notifications when campsites become available at Post Oak Park. Never miss a cancellation again.
Available on iOS and Android