- Tully Center
- Tully Lake Park
- Thomas Estates Mobile Home Park
- Tappan Hill
- Tristates
- Thomas Estates West
- Toms Landing
- Texas
- The Elms
- Thompson Mobile Home Park
- Tinker Tavern Corner
- Toad Harbor
- Treasure Island
- Tylers Corner
- Taylortown
- Toddsville
- Toll Corner
- Tuscan
- Tilly Foster
- Tompkins Corners
- Towners
- Tallman Island
- Terrace Heights
- The Raut (historical)
- Taborton
- Tamarack
- Terrace Haven Mobile Home Park
- Tomhannock
- Tompkinsville
- Tottenville