Fort McDermitt is a census-designated place (CDP) in Humboldt County, Nevada, United States. As of the 2020 census, Fort McDermitt had a population of 267. It overlaps the Fort McDermitt Indian Reservation and lies just south of the McDermitt CDP.
According to the United States Census Bureau, the Fort McDermitt CDP has an area of , all land. U.S. Route 95 runs through the CDP, leading north to Oregon and western Idaho and south to Winnemucca, Nevada.
The CDP is in the Humboldt County School District. McDermitt Combined School is in McDermitt.