Three States is an unincorporated community in Caddo Parish, Louisiana, Miller County, Arkansas, and Cass County, Texas, United States. The community is at the point where three states meet: Texas, Arkansas, and Louisiana. In 2000, the population was 45. The Louisiana side of Three States is part of the Shreveport – Bossier City metropolitan area, while the Arkansas side is part of the Texarkana metropolitan area.