- T Bridge Corner
- Tacoma
- Tahlequah
- Taholah
- Tahoma
- Tahuya
- Tall Cedars Mobile Court
- Tall Firs Estates Mobile Home Park
- Tally Ho Mobile Home Park
- Tamill
- Tampico
- Tanglefoot Island
- Tanglewilde
- Tanglewilde-Thompson Place
- Tanglewood Island
- Tanner
- Tanwax
- Tasker
- Tatoosh Island
- Taylor Towne Manor Mobile Home Park
- Teanaway
- Tekoa
- Telegraph Island
- Telford
- Telma
- Tenino
- Tenmile
- Tenmile Island
- Terrace Heights
- Terrace Park