Washington State Parks · Washington
Millersylvania State Park
Washington State Parks · Washington, United States
- Group sites
- Yes
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- Yes
- Dump station
- Yes
- Pets
- Yes
- Elevation
- 220 ft
- Dark sky
- Bortle class 4
- Cell coverage
- Verizon weak · T-Mobile none · AT&T none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Nearest town
- Olympia
- Address
- 12245 Tilley Road South
- Phone
- (360) 753-1519
- Activities
- Biking, Bird Watching, Boating, Fishing, Hiking, Horseshoe Pits, Metal Detecting, Swimming, Wildlife Viewing
131 numbered sites are mapped one by one - open the site map to pick yours.
About
Millersylvania State Park is a Washington State Park with camping available.
Fees
Washington State Parks' published statewide camping rate schedule varies by season: Standard sites $23-43/night, Partial-utility (water/electric) sites $35-56/night, Full-utility sites $41-56/night, Primitive sites $12/night flat year-round (peak season is May 15-Sept 15, shoulder Apr 1-May 14 & Sept 16-Oct 31, winter is Nov-Mar). Plus a $10/night extra-vehicle fee and an $8 (online) or $10 (phone) reservation fee, with an additional $15/reservation surcharge for non-residents. A Discover Pass is not required for day-use parking once a camping fee has been paid at that park. (Source: parks.wa.gov/passes-permits/fees.)
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 46° | 37° | 24° | 57° | 7 of 11 |
| February | 46° | 36° | 26° | 60° | 10 of 11 |
| March | 51° | 36° | 31° | 69° | 5 of 11 |
| April | 55° | 40° | 29° | 73° | 1 of 11 |
| May | 62° | 49° | 40° | 85° | 0 of 11 |
| June | 66° | 50° | 41° | 92° | 0 of 11 |
| July | 76° | 55° | 50° | 98° | 0 of 11 |
| August | 78° | 58° | 50° | 97° | 0 of 11 |
| September | 70° | 54° | 48° | 92° | 0 of 11 |
| October | 59° | 47° | 38° | 80° | 0 of 10 |
| November | 52° | 42° | 28° | 59° | 2 of 10 |
| December | 45° | 37° | 27° | 58° | 4 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Little Creek Casino Resort RV Park · Tribal Lands · 18 mi · 44 sites
- Stan Hedwall RV Park · City, County & Regional Parks · 19 mi · 29 sites
- Hope Island Marine State Park (Mason County) · Washington State Parks · 19 mi · 8 sites
- Joemma Beach State Park · Washington State Parks · 22 mi
- Rainbow Falls State Park · Washington State Parks · 25 mi · 53 sites
All public campgrounds in Washington · Every state and province · Facts read from the operator 2026-08-23. Confirm fees, rules and current status with the operator before you go.