| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sico | city | Florida | United States | 28.12 | -82.47 | 49 | |
| Sidell | city | Florida | United States | 27.12 | -82.12 | 26 | |
| Sidney Highlands | city | Florida | United States | 27.96 | -82.20 | 91 | |
| Sierra Estates | city | Florida | United States | 27.98 | -82.24 | 75 | |
| Siesta Key | city | Florida | United States | 27.30 | -82.55 | 0 | |
| Siesta Lago Mobile Home Village | city | Florida | United States | 28.31 | -81.47 | 72 | |
| Siesta Mobile Home Park | city | Florida | United States | 28.36 | -80.70 | 13 | |
| Siesta Mobile Home Park | city | Florida | United States | 29.91 | -81.37 | 29 | |
| Siesta Park Mobile Home Park | city | Florida | United States | 26.68 | -81.79 | 6 | |
| Siglo Viente | city | Florida | United States | 27.96 | -82.44 | 19 | |
| Sill Manor | city | Florida | United States | 27.71 | -82.43 | 9 | |
| Silliman | city | Florida | United States | 28.01 | -82.28 | 72 | |
| Sills | city | Florida | United States | 30.95 | -85.28 | 78 | |
| Siloam Springs Wood | city | Florida | United States | 27.91 | -82.21 | 98 | |
| Silva City | city | Florida | United States | 27.97 | -82.38 | 19 | |
| Silvan | city | Florida | United States | 27.93 | -82.52 | 6 | |
| Silver Beach Heights | city | Florida | United States | 28.95 | -81.66 | 72 | |
| Silver Bluff Estates | city | Florida | United States | 25.75 | -80.24 | 6 | |
| Silver Bluff Estates | city | Florida | United States | 28.01 | -82.44 | 49 | |
| Silver Breeze Mobile Home Community | city | Florida | United States | 28.56 | -80.81 | 45 | |
| Silver Court Trailer Park | city | Florida | United States | 25.76 | -80.25 | 6 | |
| Silver Court Trailer Park | city | Florida | United States | 25.76 | -80.25 | 6 | |
| Silver Dolphin Mobile Home Park | city | Florida | United States | 30.44 | -81.76 | 9 | |
| Silver Forrest | city | Florida | United States | 28.10 | -82.43 | 39 | |
| Silver Lake | city | Florida | United States | 28.84 | -81.80 | 72 | |
| Silver Lake Estates | city | Florida | United States | 28.02 | -82.49 | 26 | |
| Silver Lake Oaks Mobile Home Village | city | Florida | United States | 29.62 | -81.71 | 59 | |
| Silver Maple Estates | city | Florida | United States | 27.97 | -82.11 | 111 | |
| Silver Moon | city | Florida | United States | 27.99 | -82.43 | 52 | |
| Silver Oaks | city | Florida | United States | 28.05 | -82.37 | 22 | |
| Silver Oaks Mobile Home Park | city | Florida | United States | 29.07 | -82.06 | 82 | |
| Silver Palm | city | Florida | United States | 25.55 | -80.44 | 6 | |
| Silver Palm Place | city | Florida | United States | 25.55 | -80.47 | 6 | |
| Silver Palm Place Mobile Home Park | city | Florida | United States | 25.55 | -80.47 | 6 | |
| Silver Shores | city | Florida | United States | 26.19 | -80.10 | 3 | |
| Silver Springs | city | Florida | United States | 29.22 | -82.06 | 52 | |
| Silver Springs | city | Florida | United States | 30.81 | -86.55 | 229 | |
| Silver Springs Shores | city | Florida | United States | 29.10 | -82.02 | 78 | |
| Silver Star Village Mobile Home Park | city | Florida | United States | 28.58 | -81.48 | 124 | |
| Simmons Acres | city | Florida | United States | 27.97 | -82.09 | 101 | |
| Simmons Crossing | city | Florida | United States | 30.91 | -86.96 | 134 | |
| Simmons Estate | city | Florida | United States | 27.95 | -82.15 | 98 | |
| Simmons Ranch Estates | city | Florida | United States | 27.78 | -82.35 | 55 | |
| Simsville | city | Florida | United States | 30.68 | -85.17 | 88 | |
| Sinai | city | Florida | United States | 30.66 | -84.91 | 78 | |
| Sinclair Hills | city | Florida | United States | 28.09 | -82.45 | 42 | |
| Sinewood | city | Florida | United States | 28.02 | -82.47 | 19 | |
| Singletary | city | Florida | United States | 28.06 | -82.23 | 68 | |
| Sink Creek | city | Florida | United States | 30.62 | -85.15 | 91 | |
| Sirmans | city | Florida | United States | 30.35 | -83.66 | 88 | |
| Sisco | city | Florida | United States | 29.52 | -81.63 | 55 | |
| Sisson Heights | city | Florida | United States | 27.96 | -82.27 | 42 | |
| Sito | city | Florida | United States | 27.99 | -82.41 | 52 | |
| Sixmile Bend | city | Florida | United States | 26.65 | -80.58 | 19 | |
| Sixmile Creek | city | Florida | United States | 27.97 | -82.36 | 26 | |
| Sixth Avenue Trailer Park | city | Florida | United States | 25.91 | -80.19 | 6 | |
| Sixth Avenue Trailer Park | city | Florida | United States | 25.91 | -80.19 | 6 |