The 7.462-square-kilometer (2.881 sq mi) island is home to two communities of full and part-time residents, a state park, a one-room schoolhouse, and two airstrips.

[2] Two sites, both part of Stuart Island State Park,[3] are on public lands.

One is located near the center of the island, and another is on the western coast, the site of the Turn Point Light Station,[4] a lighthouse guiding shipping in the busy waters of Boundary Pass to the island's north.

Turn Point Light Station is on land administered by the Bureau of Land Management's Spokane District, Wenatchee Resource Area, Lopez Island Office.

Satellite Island, which lies in Prevost Harbor on the northeast side of the island, is used by YMCA Camp Orkila as a basecamp for teen expeditions and for field trips by campers.