| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mica | city | Washington | United States | 47.56 | -117.21 | 2509 | |
| Michigan Hill | city | Washington | United States | 46.78 | -123.10 | 390 | |
| Middle Nemah | city | Washington | United States | 46.48 | -123.89 | 98 | |
| Midlakes | city | Washington | United States | 47.62 | -122.18 | 193 | |
| Midland | city | Washington | United States | 47.17 | -122.40 | 364 | |
| Midland Meadows Mobile Home Park | city | Washington | United States | 47.17 | -122.41 | 396 | |
| Midvale | city | Washington | United States | 46.28 | -120.01 | 830 | |
| Midvale Corner | city | Washington | United States | 47.99 | -122.42 | 111 | |
| Midway | city | Washington | United States | 48.39 | -124.67 | 357 | |
| Midway | city | Washington | United States | 47.30 | -122.59 | 200 | |
| Midway | city | Washington | United States | 47.39 | -122.29 | 288 | |
| Midway Gardens Mobile Park | city | Washington | United States | 48.14 | -122.18 | 98 | |
| Midway Mobile Mansions | city | Washington | United States | 47.38 | -122.29 | 400 | |
| Milan | city | Washington | United States | 47.97 | -117.33 | 1801 | |
| Miles | city | Washington | United States | 47.91 | -118.29 | 1669 | |
| Mileta | city | Washington | United States | 47.39 | -122.43 | 196 | |
| Mill A | city | Washington | United States | 45.76 | -121.65 | 1003 | |
| Mill Creek | city | Washington | United States | 47.86 | -122.20 | 400 | |
| Mill Plain | city | Washington | United States | 45.64 | -122.49 | 216 | |
| Mill Village Mobile Home Park | city | Washington | United States | 46.87 | -122.26 | 830 | |
| Mill Wheel Mobile Home Park | city | Washington | United States | 48.75 | -122.42 | 830 | |
| Millburn | city | Washington | United States | 46.63 | -123.10 | 200 | |
| Miller River | city | Washington | United States | 47.72 | -121.40 | 974 | |
| Miller's Villa Mobile Home Park | city | Washington | United States | 47.13 | -122.45 | 328 | |
| Millers Mobile Home Park | city | Washington | United States | 48.55 | -117.91 | 1669 | |
| Milltown | city | Washington | United States | 48.31 | -122.35 | 65 | |
| Millwood | city | Washington | United States | 47.68 | -117.28 | 1965 | |
| Milton | city | Washington | United States | 47.25 | -122.31 | 298 | |
| Mima | city | Washington | United States | 46.87 | -123.07 | 108 | |
| Mineral | city | Washington | United States | 46.72 | -122.18 | 1669 | |
| Minerva Beach Mobile Village Resort | city | Washington | United States | 47.36 | -123.16 | 3 | |
| Minkler | city | Washington | United States | 48.52 | -122.11 | 134 | |
| Minnehaha | city | Washington | United States | 45.66 | -122.65 | 203 | |
| Minnick | city | Washington | United States | 46.17 | -118.13 | 1998 | |
| Mint Grove | city | Washington | United States | 47.60 | -122.08 | 206 | |
| Minter | city | Washington | United States | 47.36 | -122.69 | 3 | |
| Mirror Lake | city | Washington | United States | 47.32 | -122.34 | 364 | |
| Mirror Lake | city | Washington | United States | 48.66 | -122.21 | 305 | |
| Mirrormont | city | Washington | United States | 47.46 | -122.00 | 830 | |
| Mirrormount Estates | city | Washington | United States | 47.45 | -122.01 | 830 | |
| Mission Beach | city | Washington | United States | 48.05 | -122.27 | 0 | |
| Misty Mountain Mobile Home Park | city | Washington | United States | 47.25 | -121.99 | 830 | |
| Mitchell | city | Washington | United States | 47.19 | -119.22 | 1669 |