Answer
Treasure Beach RV Park near Fenwick Island, Delaware is the large-inventory standout in the Ocean City camping conversation—operator materials have long marketed on the order of about 1,000 sites across bayfront and interior loops.
Most Maryland resorts around Berlin, West Ocean City, and Whaleyville are smaller full-amenity parks. “Most sites” is not the same as “best for Boardwalk nights”—Treasure Beach leans Delaware beaches and Assawoman Bay, with Ocean City as a Coastal Highway day trip.
Confirm current site counts and section maps with the park before you assume a specific loop is open. Browse all bookable parks on Camping.
Sources: Treasure Beach RV Park · Visit Ocean City · Delaware Tourism
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
