- Tabor
- Tacoma Park
- Tea
- Terraville
- Terry
- Teton
- Thatcher
- Thomas
- Three Sisters Islands (historical)
- Thunder Butte
- Thunder Hawk
- Thunderbird Colony
- Thunderbird Homes Addition
- Tigerville
- Tilford
- Timber Lake
- Tinton
- Tolstoy
- Tomahawk
- Toronto
- Torvik Subdivision
- Towhead Island (historical)
- Trail City
- Trent
- Tripp
- Trojan
- Troy
- Tschetter Colony
- Tulare
- Tunerville