Place
- Sacramento County (Calif.)1
- Sakonnet River (R.I.)1
- San Benito County (Calif.)1
- San Bernardino County (Calif.)1
- San Bruno (Calif.)1
- San Carlos (Calif.)1
- San Luis Obispo County (Calif.)1
- San Mateo (Calif.)1
- Sierra Valley (Calif.)1
- Siskiyou County (Calif.)1
- South San Francisco (Calif.)1
- Sutter County (Calif.)1
- Taunton River (Mass.)1
- Ten Mile River (Mass.)1
- Tomales Bay (Calif.)1
- Tulare County (Calif.)1
- U.S. Commonwealths1
- U.S. Freely Associated States1
- U.S. Territories1
- U.S. Virgin Islands1