Miss. Code Ann. § 19-1-141

Tishomingo County is bounded by beginning at a point on the state line bounding on the State of Tennessee two miles east of the line between ranges eight and nine, east; thence east on said state line to the Tennessee River; thence with said line up the said river to the mouth of Bear creek, on the state boundary with the State of Alabama; thence southerly on the state boundary to the middle of township seven; thence west on section lines to the southwest corner of section fourteen, township seven, range nine, east; thence north on section lines to the southeast corner of section ten, township four, range nine, east; thence west on section lines to the southeast corner of section nine in the township last named; thence north on section lines to the northwest corner of said section ten; thence west to the southeast corner of section five, township four, range nine, east; thence north on sectional lines to the beginning. The county site is Iuka.