Coushatta is a town in and the parish seat of rural Red River Parish in north Louisiana, United States. It is situated on the east bank of the Red River. The community is approximately forty-five miles south of Shreveport on U.S. Highway 71. The population, 2,299 at the 2000 census, is nearly two-thirds African American, most with long family histories in the area. The 2010 census, however, reported 1,964 residents, a decline of 335 persons, or nearly 15 percent during the course of the preceding decade.