| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Mead | city | Washington | United States | 47.7675 | -117.35389 | 1902 | 22857 |
| Meadow Glade | city | Washington | United States | 45.75861 | -122.55917 | 232 | 15531 |
| Meadowdale | city | Washington | United States | 47.62833 | -122.6275 | 328 | 51123 |
| Meadowdale | city | Washington | United States | 47.85306 | -122.33222 | 308 | 103769 |
| Medical Lake | city | Washington | United States | 47.57306 | -117.68111 | 2401 | 7131 |
| Medina | city | Washington | United States | 47.62111 | -122.22639 | 164 | 76237 |
| Meeker | city | Washington | United States | 47.18639 | -122.27611 | 98 | 63044 |
| Megler | city | Washington | United States | 46.25111 | -123.85639 | 0 | 185 |
| Melbourne | city | Washington | United States | 46.94556 | -123.62472 | 400 | 1131 |
| Melone | city | Washington | United States | 46.96139 | -123.32917 | 200 | 1557 |
| Menlo | city | Washington | United States | 46.62167 | -123.64583 | 200 | 317 |
| Menoken | city | Washington | United States | 46.29944 | -118.16083 | 1519 | 143 |
| Mentor | city | Washington | United States | 46.45917 | -117.47167 | 2398 | 187 |
| Mercer Heights | city | Washington | United States | 47.57028 | -122.23056 | 118 | 91199 |
| Mercer Island | city | Washington | United States | 47.57083 | -122.22083 | 121 | 91199 |
| Mercer Island Town | city | Washington | United States | 47.58444 | -122.24167 | 200 | 76237 |
| Meredith | city | Washington | United States | 47.34667 | -122.23472 | 108 | 85427 |
| Meridian | city | Washington | United States | 47.20972 | -122.71667 | 98 | 3237 |
| Meridian | city | Washington | United States | 47.66972 | -122.32917 | 200 | 239108 |
| Meridian Heights | city | Washington | United States | 47.37944 | -122.11833 | 462 | 42806 |
| Merritt | city | Washington | United States | 47.78111 | -120.84194 | 2257 | 196 |
| Mesa | city | Washington | United States | 46.57639 | -119.00556 | 698 | 690 |
| Meskill | city | Washington | United States | 46.63833 | -123.16972 | 400 | 671 |
| Metaline | city | Washington | United States | 48.85056 | -117.38972 | 2001 | 126 |
| Metaline Falls | city | Washington | United States | 48.86389 | -117.37139 | 2004 | 126 |
| Meteor | city | Washington | United States | 48.26639 | -118.28389 | 1998 | 61 |
| Methow | city | Washington | United States | 48.13028 | -120.0025 | 1345 | 325 |
| Metum | city | Washington | United States | 47.69194 | -122.40278 | 200 | 130602 |
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