Griffiths-Priday Ocean 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. The park extends from the beach through low dunes to the river, then north to the river's mouth. The Copalis Spit natural area, a designated wildlife refuge, is also part of the park.

Hope Island State Park is a 106-acre marine camping park on the western side of the state in Mason County, Puget Sound. This quiet island is reachable only by boat. Covered with old-growth forests and saltwater marshes, the park features a beach one-and-a-half miles long.

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. The island is forested with occasional meadows and rock outcroppings.

Ike Kinswa State Park is a 454-acre camping park with 46,000 feet of freshwater shoreline on the north side of Mayfield Lake. The campsites are forested and available year-round.

Illahee State Park is a 75-acre marine camping park with 1,785 feet of saltwater frontage on Port Orchard Bay. "Illahee" means "earth" or "country" in the Indian tradition, and views of Puget Sound from the Illahee beach give the viewer a sense of what that word meant to native people. The park has plenty of parking space, lots of fresh air, facilities for a number of outdoor activities and access to a variety of water sports.

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. More than 100 miles of trail extends from Cedar Falls to the Columbia River. High trestles provide spectacular views of the valley below.

James Island State Park is a 113-acre marine camping and moorage park with 12, 335 feet of saltwater shoreline on Rosario Strait. The park features a beautiful western view of the San Juan islands from a high bluff along the loop trail.

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. The forested island park is accessible by road and bridge and is off the beaten path. Most visitors arrive by boat. The park has campsites near the docks, as well as on rolling, grassy areas. Jarrell Cove State Park administers five other satellite parks including: Harstine Island, McMicken Island, Stretch Point, Eagle Island and Hope Island State Parks. Harstine Island State Park is a day use park with beach access via a half-mile trail. It is a two mile drive from Jarrell Cove. The other satellite parks are all accessible by boat only and offer buoys for moorage.

Joemma Beach State Park is a 122-acre marine camping park with 3,000 feet of saltwater frontage on southeast Key Peninsula. Aside from the natural beauty of park and surroundings, the area is an excellent place for fishing, boating and crabbing.

Jones Island State park is a 188-acre marine camping park with 25,000 feet of saltwater shoreline on the San Jaun channel. The park features a beautiful loop trail down the center of the island then around the western shore.

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. The scenery is beautiful, views are magnificent, wildlife is everywhere and the beach is one of the grandest on Whidbey Island.

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. Boat and raft launching is by hand only. River rafting and kayaking down the Green River Gorge is for expert-level enthusiasts only. Shoreline activities include nature appreciation, trout fishing and picnicking.

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. It is reachable by beachable boats only.

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. The park offers beautiful natural surroundings and sweeping views of Hood Canal.

Kopachuck State Park is a 109-acre marine and camping 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. The park provides scenic views of sunsets, the Olympic Mountains and Puget Sound.

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. The park gets an annual average rainfall of 11 inches. Summer tends to be hot and dry. Annual average snowfall is 42 inches.

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. The park has beautiful mountain views and hiking trails to explore in the summer and cross country and snowmobiling trails to enjoy in the winter. The park's location also allows for snowy winter-sport opportunities.

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 Indian tribes for centuries. The park provides deciduous forest and wetland vegetation for the enjoyment of visitors. A salmon-bearing creek and a great-blue-heron rookery are additional features.

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. Aside from the interesting displays of old logging gear and curiosities, the lake is good for fishing, and the rustic charm of the park makes for excellent day outings and group camping trips.

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. The park is bisected by the Wenatchee River, creating two distinct areas – south park, which features areas for camping, swimming and horseback riding, and north park, which is in a less developed, forested section of the park and a quarter-mile walk from the lake. The park is a natural wildlife area, and visitors should be aware of the presence of bears and other natural dangers.

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. The park features two freshwater lakes, coves and tidelands. Sunsets are gorgeous. A variety of non-motorized, multiple-use trails wind through the park.

Leadbetter Point State Park is a natural area open for day use. The park features beach frontage on the Pacific Ocean and Willapa Bay. It borders the Willapa National Wildlife Refuge which has about five miles of ocean beach and several miles of bay beach. There are views of the Pacific Ocean to the west and Willapa Bay and hills to the east. The park is part of the Willapa Bay Water Trail. Visitors can enjoy hiking, fishing and clamming at the park.

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. Coniferous trees, streams, wetlands, dense vegetation and wet prairie comprise the park environment.

Lewis and Clark Trail State Park is a 37-acre camping park with 1,333 feet of freshwater shoreline on the Touchet River. The park is a rare treasure of old-growth forest and river in the midst of the surrounding arid grassland.

Lime Kiln Point is a 36-acre day-use park set on the west side of San Juan Island. The park is considered one of the best places in the world to view whales from a land-based facility. Orca whales are common in the waters off Lime Kiln. The park, which features a richly diverse environment, includes the remnants and landscapes of a history filled with change, along the rocky shoreline and through the wooded uplands.