Henderson is a city in Rusk County, Texas, United States. The population was 11,273 at the 2000 census. It is the county seat of Rusk County. Henderson is named for James Pinckney Henderson, the first governor of the state of Texas. Annual events in the city of Henderson include the Heritage Syrup Festival in November, celebrating the east Texas tradition of syrup making, and the East Texas Sacred Harp Convention in August. Henderson is the home of the Texas Baptist Institute and Seminary, a Missionary Baptist institution.