- Saddle Island
- Sage
- Saint Clair
- Salt Wells
- San Jacinto
- San Pedros
- Sand Island
- Sand Pass
- Sandy
- Sandy Mill
- Sandy Valley
- Sano
- Schoer Place
- Schurz
- Schweer Housing Area
- Scossa
- Scott Island
- Scottys Junction
- Scraper Springs
- Searchlight
- Sentinel Island
- Shafter
- Shannon
- Shanty Town
- Sheepshead
- Sheridan
- Shermantown
- Shores
- Shoshone
- Shoshone