| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Mud Spring | city | Washington | United States | 47.83056 | -119.81222 | 2598 | 251 |
| Mukilteo | city | Washington | United States | 47.94472 | -122.30333 | 413 | 25401 |
| Murdock | city | Washington | United States | 45.65444 | -121.18722 | 400 | 10861 |
| Murnen | city | Washington | United States | 46.62917 | -123.32167 | 400 | 668 |
| Murphys Corner | city | Washington | United States | 47.87833 | -122.20556 | 410 | 85907 |
| Mushroom Corner | city | Washington | United States | 47.04694 | -122.76361 | 200 | 37368 |
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