Ketron Island, where a stolen Horizon Air plane crashed Friday evening, is located in south Puget Sound between Anderson Island and Steilacoom on the mainland.

American explorer Charles Wilkes discovered the 221-acre island during the Wilkes Expedition of 1838-1842.

The privately owned island is forested with a few homes toward the north end.

According to the 2010 U.S. Census, 17 people live on the island.

Ketron is accessible by ferry service, which runs four times per day.