| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Babb | city | Washington | United States | 47.46 | -117.66 | 2509 | |
| Babcock | city | Washington | United States | 46.33 | -118.59 | 1099 | |
| Baby Island Heights | city | Washington | United States | 48.10 | -122.52 | 22 | |
| Bacon | city | Washington | United States | 47.50 | -119.33 | 1679 | |
| Badger | city | Washington | United States | 46.20 | -119.36 | 830 | |
| Bagdad Junction | city | Washington | United States | 47.87 | -118.94 | 2598 | |
| Bagley Junction | city | Washington | United States | 47.39 | -121.85 | 997 | |
| Baileysburg | city | Washington | United States | 46.30 | -117.95 | 1797 | |
| Bainbridge | city | Washington | United States | 47.66 | -122.52 | 3 | |
| Bainbridge Grange | city | Washington | United States | 47.66 | -122.52 | 3 | |
| Bainbridge Island | city | Washington | United States | 47.63 | -122.52 | 3 | |
| Baird (historical) | city | Washington | United States | 47.62 | -119.47 | 2509 | |
| Baker | city | Washington | United States | 45.75 | -122.66 | 275 | |
| Baker Heights | city | Washington | United States | 48.44 | -122.25 | 200 | |
| Baker-Langdon | city | Washington | United States | 46.02 | -118.32 | 971 | |
| Bakerview Mobile Estates | city | Washington | United States | 48.79 | -122.50 | 95 | |
| Balch | city | Washington | United States | 46.81 | -123.24 | 200 | |
| Balder | city | Washington | United States | 47.18 | -117.41 | 2509 | |
| Balford | city | Washington | United States | 48.93 | -122.15 | 830 | |
| Ballard | city | Washington | United States | 47.68 | -122.39 | 108 | |
| Ballow | city | Washington | United States | 47.24 | -122.87 | 29 | |
| Bandera | city | Washington | United States | 47.39 | -121.53 | 3579 | |
| Bangor | city | Washington | United States | 47.72 | -122.75 | 3 | |
| Banner | city | Washington | United States | 47.49 | -122.54 | 295 | |
| Barberton | city | Washington | United States | 45.69 | -122.60 | 209 | |
| Barco | city | Washington | United States | 48.28 | -121.67 | 830 | |
| Barham | city | Washington | United States | 47.08 | -119.01 | 1181 | |
| Baring | city | Washington | United States | 47.77 | -121.49 | 830 | |
| Barker | city | Washington | United States | 48.58 | -119.48 | 898 | |
| Barneston | city | Washington | United States | 47.39 | -121.86 | 994 | |
| Barrett Lake Mobile Home Park | city | Washington | United States | 48.85 | -122.57 | 39 | |
| Barron | city | Washington | United States | 48.75 | -120.72 | 4603 | |
| Barstow | city | Washington | United States | 48.78 | -118.14 | 1669 | |
| Basin City | city | Washington | United States | 46.59 | -119.15 | 830 | |
| Bassett Junction | city | Washington | United States | 47.04 | -119.09 | 1164 | |
| Bates | city | Washington | United States | 45.70 | -120.43 | 400 | |
| Battle Ground | city | Washington | United States | 45.78 | -122.53 | 291 | |
| Battle Ground West | city | Washington | United States | 45.78 | -122.54 | 275 | |
| Battle Point | city | Washington | United States | 47.66 | -122.58 | 98 | |
| Batum | city | Washington | United States | 47.23 | -118.81 | 1669 | |
| Bay Center | city | Washington | United States | 46.63 | -123.95 | 3 | |
| Bay Center Junction | city | Washington | United States | 46.60 | -123.92 | 3 | |
| Bay City | city | Washington | United States | 46.86 | -124.06 | 3 | |
| Bay View | city | Washington | United States | 48.01 | -122.46 | 200 | |
| Bay View | city | Washington | United States | 48.48 | -122.48 | 0 | |
| Bay View Mobile Home Park | city | Washington | United States | 48.48 | -122.47 | 0 | |
| Bayne | city | Washington | United States | 47.30 | -121.91 | 997 | |
| Bayne Junction | city | Washington | United States | 47.30 | -121.91 | 1108 | |
| Bayshore | city | Washington | United States | 47.25 | -123.05 | 39 | |
| Bayview | city | Washington | United States | 47.28 | -122.61 | 95 | |
| Bayview Mobile Home Park | city | Washington | United States | 48.10 | -123.37 | 262 | |
| Bayview Mobile Park | city | Washington | United States | 48.26 | -124.31 | 219 | |
| Bayview Recreational Vehicle Park | city | Washington | United States | 48.26 | -124.31 | 219 | |
| Baywood Mobile Home Park | city | Washington | United States | 48.94 | -122.74 | 59 | |
| Baywood Village Mobile Home Park | city | Washington | United States | 48.08 | -123.06 | 108 |