Decatur Island
Decatur Island in the foreground, James Island in the distance | |
Location of Decatur Island within the San Juan Islands | |
| Geography | |
|---|---|
| Location | Pacific Northwest |
| Coordinates | 48°30′37″N 122°48′39″W / 48.510236°N 122.810926°W |
| Archipelago | San Juan Islands |
| Area | 3.524 sq mi (9.13 km2) |
| Administration | |
United States | |
| State | Washington |
| County | San Juan County |
| Demographics | |
| Population | 71 (2000) |
Decatur Island is one of the San Juan Islands in Washington state, USA. Located just east of Lopez Island across Lopez Sound and just south of Blakely Island across Thatcher Pass, it is 3.524 square miles (9.127 km²) in area, and was named by the Wilkes Expedition in 1841 for naval officer Stephen Decatur.