- T Island
- Table Bluff
- Table Bluff Rancheria
- Tagus
- Tahoe City
- Tahoe Estates
- Tahoe Keys
- Tahoe Marina Estates
- Tahoe Park
- Tahoe Pines
- Tahoe Valley
- Tahoe Woods
- Tahoma
- Tahoma Meadows
- Tajiguas
- Talbert
- Tall Timber Camp
- Talmont
- Talus
- Tamalpais-Homestead Valley
- Tamalpais Valley
- Tamalpais Valley Junction
- Tamarack
- Tamarack Springs
- Tambo
- Tan Oak Park
- Tanbark Flats
- Tancred
- Tangair
- Tarke