- Unionville
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville
- Unionville, Beaver
- United
- Unity
- Unity Junction
- Unityville
- Universal
- University Heights
- University Park
- Uno
- Upland
- Upper Bear Island
- Upper Black Eddy
- Upper Darby
- Upper Dublin
- Upper Dutchtown
- Upper Emilie
- Upper Exeter
- Upper Fairview
- Upper Glasgow
- Upper Hillville
- Upper Holmesburg
- Upper Lawn