- Upper Shodack Island
- Upper Town Landing
- Ulster Heights
- Ulster Landing
- Ulster Park
- Ulsterville
- Unadilla
- Unadilla Center
- Unadilla Forks
- Uncas Island
- Undercliff
- Underwood
- Underwood Corner
- Uneeda Beach
- Union
- Union Center
- Union Center
- Union Corners
- Union Corners
- Union Corners
- Union Falls
- Union Hill
- Union Mills
- Union Settlement
- Union Springs
- Union Valley
- Union Valley
- Uniondale
- Unionport
- Uniontown