List of all settlements:
- Ada, Hardin
- Adamsville, Hardin
- Alden, Hardin
- Alger, Hardin
- Buckeye, Hardin
- Cave-In-Rock, Hardin
- Cecilia, Hardin
- Crump, Hardin
- Dola, Hardin
- Dunkirk, Hardin
- Eldora, Hardin
- Elizabethtown, Hardin
- Elizabethtown, Hardin
- Forest, Hardin
- Hubbard, Hardin
- Iowa Falls, Hardin
- Kenton, Hardin
- Kountze, Hardin
- Lumberton, Hardin
- McGuffey, Hardin
- Milledgeville, Hardin
- Mount Victory, Hardin
- New Providence, Hardin
- Olivet, Hardin
- Patterson, Hardin
- Pinewood Estates, Hardin
- Radcliff, Hardin
- Radcliffe, Hardin
- Ridgeway, Hardin
- Rose Hill Acres, Hardin
- Rosiclare, Hardin
- Saltillo, Hardin
- Savannah, Hardin
- Silsbee, Hardin
- Sonora, Hardin
- Sour Lake, Hardin
- Steamboat Rock, Hardin
- Union, Hardin
- Upton, Hardin
- Vine Grove, Hardin
- Walnut Grove, Hardin
- West Point, Hardin
- Whitten, Hardin
- Wildwood, Hardin