Tate County is a county located in the northwestern portion of the U.S. state of Mississippi. As of the 2010 census, the population was 28,886. Its county seat is Senatobia. Organized in 1873 from portions of DeSoto, Marshall, and Tunica counties, the county is named for Thomas Simpson Tate, one of the first prominent American settlers of the area.Tate County is part of the Memphis, TN - MS - AR Metropolitan Statistical Area. It is located east of the Mississippi Delta.Actor James Earl Jones was born in Arkabutla, Mississippi, an unincorporated area of Tate County. After the age of five, he grew up with his maternal grandparents on their farm in Jackson, Michigan.