Carthage is a city in Panola County, Texas, United States. The population was 6,664 at the 2000 census. It is the county seat of Panola County, and is situated in East Texas near the Louisiana state line.
According to the United States Census Bureau, Carthage has a total area of 10.5 square miles (27.3 km²), of which, 10.5 square miles (27.2 km²) of it is land and 0.04 square miles (0.1 km²) of it (14.2%) is water.
As of the census of 2000, there were 6,664 people, 2,598 households, and 1,771 families residing in the city. The population density was 633.8 people per square mile (244.8/km²). There were 2,931 housing units at an average density of 278.7 per square mile (107.7/km²). The racial makeup of the city was 74.65% White, 21.02% African American, 0.47% Native American, 0.59% Asian, 1.98% from other races, and 1.29% from two or more races. Hispanic or Latino of any race were 4.35% of the population.