State Park / State Forest
Near Greenville, Maine: $27–$35/night, rigs to 40 ft. Open Mid-May through Columbus Day. Book 4 months ahead via ME State Parks portal.
State Park / State Forest
Managing authority
Near Greenville, Maine
How much does camping at Lily Bay State Park Campground cost, and when is it open?
Lily Bay State Park Campground near Greenville, Maine (State Park / State Forest) — camping fee $27–$35/night, season Mid-May through Columbus Day, RV size limit Up to 40 ft. Reservations: 4 months ahead via ME State Parks portal — book direct through the official channel.
The numbers
Fee range
$27–$35/night
Season open
Mid-May through Columbus Day
RV size limit
Up to 40 ft
Reservation window
4 months ahead via ME State Parks portal
The insider read
Moosehead Lake — largest lake in Maine. Closest paved camp to the Mt. Kineo cliff face. Moose viewing dawn/dusk on bay edges; bring repellent + headnet — black-fly season early June is brutal.
Original analysis from PickRV — synthesised from public sources you can verify, pulling the operational details competitor guides typically skip.
Verify at maine.govOn site
Book it right
PickRV doesn't handle campground bookings — reserve direct through the official channel so policies and cancellations flow through one record.
Opens campwithme.com
Every fact above is sourced from the managing agency's canonical page. Cross-check fee, season, and size limit before you depend on them.
Match the campground's size limit and hookup level to a vehicle category, then plan the rest of the trip.
Keep exploring
Near Camden
StateInsider tip · Walk-to-Camden-Harbor camp (1 mile). Mt. Battie summit drive offers the postcard harbor view. Sites in loops 1-3 are sheltered pine; 4-5 are more exposed.
Near Richmond
StateInsider tip · Boat-shuttle-only camp on a 4-mile Kennebec River island. Bald eagles + wild turkey + white-tail deer year-round. Limit 20 campers — most isolated Maine state-managed camp.
Near Bar Harbor
PrivateInsider tip · Acadia NP RVs that can't fit Blackwoods (over 35 ft) come here. Free Acadia shuttle stops at the camp entrance. Lobster bake nights Thursday Jul-Aug.
Near Otter Creek
NPSInsider tip · Closest NPS camp to Cadillac Mountain sunrise (vehicle reservation needed separately May-Oct, $6). 0.5-mile trail from camp to the Ocean Path. Showers at the nearby Seawall comfort station ($).
Nearby & related
Sourced costs, campground directories, and the places worth a detour — the next layer of Maine trip planning.
Before you go
Maine rules
Verified 2026-05-10