| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Bobs Mobile Home Park | city | Washington | United States | 47.13 | -122.53 | 298 | |
| Boddy | city | Washington | United States | 47.65 | -122.23 | 3 | |
| Bodie | city | Washington | United States | 48.83 | -118.90 | 2791 | |
| Boise | city | Washington | United States | 47.18 | -122.02 | 830 | |
| Boistfort | city | Washington | United States | 46.54 | -123.13 | 400 | |
| Bolles | city | Washington | United States | 46.28 | -118.22 | 1197 | |
| Bonavilla Mobile Home Park | city | Washington | United States | 47.06 | -122.31 | 830 | |
| Bonel Mobile Manor | city | Washington | United States | 47.38 | -122.26 | 170 | |
| Bonney Lake | city | Washington | United States | 47.18 | -122.19 | 830 | |
| Bordeaux | city | Washington | United States | 46.89 | -123.08 | 400 | |
| Bossburg | city | Washington | United States | 48.75 | -118.04 | 1669 | |
| Boston Harbor | city | Washington | United States | 47.14 | -122.90 | 88 | |
| Bothell | city | Washington | United States | 47.76 | -122.21 | 200 | |
| Boulevard Park | city | Washington | United States | 47.49 | -122.32 | 380 | |
| Boundary | city | Washington | United States | 49.00 | -121.61 | 2509 | |
| Bow | city | Washington | United States | 48.56 | -122.40 | 52 | |
| Bow Lake Residential Mobile Home Community | city | Washington | United States | 47.44 | -122.29 | 396 | |
| Bowman Hilton Mobile Home Park | city | Washington | United States | 47.18 | -122.22 | 173 | |
| Boyds | city | Washington | United States | 48.71 | -118.13 | 1669 | |
| Boylston | city | Washington | United States | 46.91 | -120.23 | 2598 |