- Upper Brownville
- Uhdey
- Uhlers Crossing
- Uhlerstown
- Uledi
- Ulster
- Ulysses
- Unamis
- Undercliff
- Unicorn
- Union
- Union
- Union Center
- Union City
- Union Corner
- Union Dale
- Union Deposit
- Union Furnace
- Union Grove
- Union Hill
- Union Hill
- Union Mills
- Union Square
- Union Valley
- Union Water Works
- Uniontown
- Uniontown
- Uniontown
- Uniontown
- Uniontown