Griffiths-Priday State Park is a 364-acre marine park with 8,316 feet of saltwater shoreline on the Pacific Ocean and 9,950 feet of freshwater shoreline on the Copalis River.
Hope Island State Park is a 106-acre marine camping park on the western side of the state in Mason County, Puget Sound.
Hope Island (north) State Park is a 200-acre marine park in Skagit Bay. The park offers several campsites, attractive beaches, and a trail across the island.
Ike Kinswa State Park is a 454-acre camping park with 46,000 feet of freshwater shoreline on the north side of Mayfield Lake.
Illahee State Park is a 75-acre marine camping park with 1,785 feet of saltwater frontage on Port Orchard Bay.
Iron Horse State Park is a 1,612-acre park that was once part of the path of the Chicago-Milwaukee-St. Paul-Pacific Railroad.
Jackson House State Park Heritage Site is a 1.4-acre day-use park in Chehalis on the Jackson Highway.
Jarrell Cove State Park is a 43-acre marine camping park with 3,500 feet of saltwater shoreline on the northwest end of Harstine Island in south Puget Sound.
Joemma Beach State Park is a 122-acre marine camping park with 3,000 feet of saltwater frontage on southeast Key Peninsula.
Jones Island State park is a 188-acre marine camping park with 25,000 feet of saltwater shoreline on the San Juan channel.
Joseph Whidbey State Park is a 112-acre day-use park with 3,100 feet of saltwater shoreline on the Strait of Juan De Fuca in northern Puget Sound.
Kanaskat-Palmer State Park is a 320-acre camping park on a small, low plateau in a natural forest setting. The park has two miles of shorelines on the Green River.
Kinney Point is a 76-acre park situated on the south end of Marrowstone Island. The park features 683 feet of saltwater shoreline on Admiralty Inlet and Oak Bay.
Kitsap Memorial State Park is a 58-acre camping park with 1,797 feet of saltwater shoreline and facilities for group and individual recreation, weddings and overnight stays.
Klickitat State Park Trail
Kopachuck State Park is a 109-acre marine park with 5,600 feet of saltwater shoreline on Henderson Bay. One portion of the park, Cutts Island or Deadman's Island is a half mile from shore and reachable only by boat.
Lake Chelan State Park is a 127-acre camping park on the forested south shore of Lake Chelan. The park has 6,000 feet of shoreline, lakeside views and expansive lawns for strolling and playing.
Lake Easton State Park is a forested, 516-acre year-round camping park with 24,000 feet of freshwater access on the shores of Lake Easton in the Cascade Mountain foothills.
Lake Sammamish State Park is a 512-acre day-use park with 6,858 feet of waterfront on Lake Sammamish. The area around the lake was an important culture zone for local Native American tribes for centuries.
Lake Sylvia State Park is a quiet, 233-acre camping park with 15,000 feet of freshwater shoreline. The park is an old logging camp in a wooded area halfway between Olympia and the Pacific shore.
Lake Wenatchee State Park is a 489-acre camping park with 12,623 feet of waterfront on glacier-fed Lake Wenatchee and the Wenatchee River.
Larrabee State Park is a 2,683-acre camping park with 8,100 feet of saltwater shoreline on Samish Bay near Bellingham in northwest Washington.
Leadbetter Point State Park is a natural area open for day use. The park features beach frontage on the Pacific Ocean and Willapa Bay.
Lewis and Clark State Park is a 621-acre camping park situated in one of the last major stands of old-growth forest in the state.