- Hope Island State Park - Skagit County is a 200-acre (81 ha) marine state park located on Hope Island at the northern end of Skagit Bay in Skagit County, Washington. The island has primitive campsites, beaches and forest with occasional meadows and rock outcroppings, and a trail across the island. Five mooring buoys are found on the island’s northern flank. Herons nest on the southwestern end of the island. Significant cliffs surround most of the island, making getting inland a challenge.