| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Skagit City | city | Washington | United States | 48.38 | -122.36 | 9 | |
| Skagit Valley Mobile Manor | city | Washington | United States | 48.43 | -122.30 | 177 | |
| Skagit Valley View Mobile Home Park | city | Washington | United States | 48.52 | -122.24 | 144 | |
| Skamania | city | Washington | United States | 45.62 | -122.04 | 200 | |
| Skamokawa | city | Washington | United States | 46.27 | -123.46 | 0 | |
| Skokomish | city | Washington | United States | 47.33 | -123.16 | 101 | |
| Skookumchuck | city | Washington | United States | 46.91 | -122.77 | 400 | |
| Skykomish | city | Washington | United States | 47.71 | -121.36 | 1151 | |
| Skylark Village II Mobile Home Park | city | Washington | United States | 47.28 | -122.22 | 200 | |
| Skylark Village Mobile Home Park | city | Washington | United States | 47.28 | -122.22 | 200 | |
| Skyway | city | Washington | United States | 47.49 | -122.25 | 246 | |
| Skyway Mobile Home Park | city | Washington | United States | 47.49 | -122.26 | 200 |