Jasper is a city and the county seat of Jasper County, Texas, in the United States. The population was 8,247 at the 2000 census and 7,590 at the 2010 census. Jasper is situated in the Deep East Texas subregion, about northeast of Houston. Jasper (the "Butterfly Capital of Texas") holds an annual Butterfly Festival the first Saturday in October to celebrate the migration of the monarch butterflies.