North America : U
- Ubly (1)
- Ucluelet (9)
- Uehling (1)
- Uhrichsville (2)
- Ukiah (11)
- Ullin (1)
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- Umatilla (3)
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- Uncasville (9)
- Union (2)
- Union (1)
- Union (1)
- Union (3)
- Union (1)
- Union (118)
- Union (2)
- Union (5)
- Union (1)
- Union Bay (1)
- Union Center (1)
- Union City (109)
- Union City (11)
- Union City (2)
- Union City (8)
- Union City (1)
- Union City (1)
- Union City (7)
- Union Dale (1)
- Union Grove (1)
- Union Grove (2)
- Union Hall (1)
- Union Pier (5)
- Union Springs (2)
- Union Springs (1)
- Uniondale (6)
- Uniontown (7)
- Uniontown (26)
- Unionville (1)
- Unionville (2)
- Unionville (1)
- Unionville (7)
- Unity (2)
- Unity (1)
- Unity (7)
- Unity (1)
- Unityville (1)
- Universal City (10)
- Universal City (10)
- university city (1)
- University Place (5)
- unknown (1)
- unknown (7)
- Unknown (1)
- Unknown (1)
- Unknown (1)
- Unknown (1)
- Unknown (2)
- Upland (44)
- Upland (1)
- Upper Black Eddy (1)
- Upper Darby (16)
- Upper Lake (2)
- Upper Marlboro (4)
- Upper Musquodoboit (1)
- Upper Sandusky (9)
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- Upsala (1)
- Upton (2)
- Upton (1)
- Urbana (36)
- Urbana (8)
- Urbandale (14)
- Urbanna (2)
- Utica (2)
- Utica (2)
- Utica (38)
- Utica (21)
- Utica (3)
- Utopia (1)
- Utterson (1)
- Uvalde (8)
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- Uxbridge (5)
- Uxbridge (12)
