Yorks Islands, also known as "Yorks 8 Islands" or "York's Islands" or simply "York Island(s)" are a group of several islands in the flood plain of the Missouri River, in Broadwater County, Montana, about 4 miles south (up-river) from Townsend, Montana, along U.S. Highway 287. The islands were named by the Lewis and Clark Expedition (1803–1806) for Clark's slave York, when the expedition passed this way in 1805 on their historic journey of exploration to the Pacific Ocean. The islands may be accessed from U.S.287, as a Montana Fishing Access site.