Hemphill is a city in Sabine County, Texas, United States. The population was 1,029 at the 2020 census. It is the county seat of Sabine County. It is located on State Highway 87 at the junction of State Highway 184, and is surrounded by the Sabine National Forest and the Toledo Bend Reservoir.

Sabine County is a county located on the central eastern border of the U.S. state of Texas. As of the 2020 census, its population was 9,894. The county was organized on December 14, 1837, and named for the Sabine River, which forms its eastern border.