| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| McAdam | city | Washington | United States | 46.70 | -118.42 | 997 | |
| McCarteney | city | Washington | United States | 47.53 | -119.72 | 1669 | |
| McCleary | city | Washington | United States | 47.05 | -123.27 | 396 | |
| McCleary Junction | city | Washington | United States | 47.07 | -123.27 | 383 | |
| McCormick | city | Washington | United States | 46.55 | -123.33 | 830 | |
| McCoy | city | Washington | United States | 47.19 | -117.31 | 2549 | |
| McCredie | city | Washington | United States | 45.82 | -120.00 | 347 | |
| McCurry Heights Mobile Home Park | city | Washington | United States | 47.52 | -122.70 | 400 | |
| McDaniels Mobile Village | city | Washington | United States | 47.86 | -121.71 | 200 | |
| McDonald | city | Washington | United States | 47.07 | -119.22 | 1223 | |
| McGees (historical) | city | Washington | United States | 48.07 | -122.86 | 278 | |
| McGilvara | city | Washington | United States | 47.59 | -122.24 | 147 | |
| McGowan | city | Washington | United States | 46.25 | -123.91 | 0 | |
| McIntosh | city | Washington | United States | 46.86 | -122.78 | 400 | |
| McKay | city | Washington | United States | 46.34 | -118.14 | 1669 | |
| McKees Beach | city | Washington | United States | 48.13 | -122.36 | 0 | |
| McKenna | city | Washington | United States | 46.93 | -122.56 | 357 | |
| McKenna Heights Mobile Home Park | city | Washington | United States | 46.94 | -122.54 | 400 | |
| McLeans Orchard (historical) | city | Washington | United States | 47.76 | -120.07 | 895 | |
| McLoughlin | city | Washington | United States | 45.61 | -122.60 | 200 | |
| McLoughlin Heights | city | Washington | United States | 45.62 | -122.60 | 206 | |
| McMicken Heights | city | Washington | United States | 47.45 | -122.28 | 400 | |
| McMillan Village Mobile Home Park | city | Washington | United States | 47.14 | -122.24 | 200 | |
| McMillin | city | Washington | United States | 47.14 | -122.24 | 200 | |
| McMurray | city | Washington | United States | 48.32 | -122.24 | 275 | |
| McVan | city | Washington | United States | 47.45 | -122.29 | 400 |