TENNESSEE COUNTIES 507. The Three Grand Divisions. Pursuant to. Tennessee Code Annotated Title 4, Chapter 1, Part 2. The western division comprises the counties of Benton, Carroll, Chester, Crockett, Decatur, Dyer, Fayette, Gibson, Hardeman, Hardin, Haywood, Henderson, Henry, Lake, Lauderdale, McNairy, Madison, Obion, Shelby, Tipton and Weakley.