| Waterloo, WI (Town) |
| Waterloo, WI (City) |
| Waterloo Township, MI (Township) |
| Waterloo Township, OH (Township) |
| Waterloo Township, IA (Township) |
| Waterman, IL (Village) |
| Waterman Township, IA (Township) |
| Waterproof, LA (Town) |
| Waters Edge Community Development District (Manatee County), FL (CDD) |
| Waters Edge Community Development District (Pasco County), FL (CDD) |
| Waterset North Community Development District, FL (CDD) |
| Watersmeet Township, MI (Township) |
| Waterstone Community Development District, FL (CDD) |
| Watertown, TN (City) |
| Watertown, CT (Town) |
