Miss. Code Ann. § 19-1-95

Monroe County is bounded by beginning on the range line between ranges five and six, east, one mile north of the township line between townships eleven and twelve, south; thence east by section lines to the line between the states of Mississippi and Alabama; thence southerly on said state line to a point due east from Robinson's bluff, on the Buttahatchie River; which is the point where the middle line (east and west) of the north half of south half of section 21, township 15, range 17 west intersects with the center line of said Buttahatchie River immediately west of said Robinson's bluff, thence due west from said point on said Mississippi and Alabama State line continuing along the subdivision line named through section 19, township 15, range 16 west and sections 24, 23, 22 and 21, township 15, range 17 west to where said subdivision line intersects the center line of Buttahatchie River; thence down said river, with its meanderings, to the Tombigbee River; thence up said river to the point where the section line running east from the northwest corner of section twenty-four, township sixteen, range seven, east, intersects said river; thence west to the line between ranges five and six, east; thence north on said range line to the beginning. The county site is Aberdeen.