Miss. Code Ann. § 19-1-143: Miss. Code Ann. § 19-1-143

Tunica County is bounded by beginning on the Mississippi River where the line between townships two and three, south, intersects the same; thence east on said township line to the line between ranges nine and ten, west of the Chickasaw meridian; thence south on said range line to where it intersects Coldwater River; thence down said river to where it is intersected by a line extended west from the center of township six; thence east to the range line between ranges nine and ten, west; thence to the southeast corner of township six, range ten, west; thence west to the southwest corner of township six, range ten, west; thence south to the southwest corner of township seven, range ten, west; thence west to the boundary between the Chickasaw and Choctaw cessions; thence northwest with said boundary to the Mississippi River; thence up said river, with its meanderings, to the beginning. The county site is Tunica.