| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Mack | city | Colorado | United States | 39.22389 | -108.86444 | 4498 | 1059 |
| Mad Creek | city | Colorado | United States | 40.56611 | -106.88778 | 6794 | 1335 |
| Madrid | city | Colorado | United States | 37.12694 | -106.64167 | 11676 | 230 |
| Magnolia | city | Colorado | United States | 39.99389 | -105.36472 | 7132 | 6663 |
| Maher | city | Colorado | United States | 38.645 | -107.58417 | 6797 | 464 |
| Maitland | city | Colorado | United States | 37.65667 | -104.83333 | 6295 | 265 |
| Malachite | city | Colorado | United States | 37.75444 | -105.26028 | 7477 | 56 |
| Maloy | city | Colorado | United States | 40.24444 | -104.96944 | 4924 | 2455 |
| Malta | city | Colorado | United States | 39.22944 | -106.35028 | 9596 | 3985 |
| Manassa | city | Colorado | United States | 37.17417 | -105.93694 | 7696 | 1424 |
| Mancos | city | Colorado | United States | 37.345 | -108.28861 | 7103 | 338 |
| Manhattan historical | city | Colorado | United States | 40.73222 | -105.59944 | 8533 | 112 |
| Manila | city | Colorado | United States | 39.75639 | -104.52194 | 5541 | 267 |
| Manitou Springs | city | Colorado | United States | 38.85972 | -104.91667 | 6397 | 10635 |
| Manzanola | city | Colorado | United States | 38.10944 | -103.86556 | 4258 | 194 |
| Marble | city | Colorado | United States | 39.07222 | -107.18833 | 7998 | 35 |
| Marcott | city | Colorado | United States | 40.87861 | -102.72361 | 3674 | 98 |
| Mariano | city | Colorado | United States | 37.17944 | -108.87278 | 5597 | 89 |
| Marigold | city | Colorado | United States | 38.66111 | -105.22083 | 6988 | 718 |
| Marlman | city | Colorado | United States | 38.09361 | -103.34861 | 4002 | 790 |
| Marnett | city | Colorado | United States | 40.16833 | -105.13333 | 4999 | 43337 |
| Marshall | city | Colorado | United States | 39.95556 | -105.22917 | 5587 | 26302 |
| Marshdale | city | Colorado | United States | 39.5925 | -105.31167 | 7798 | 10754 |
| Marvel | city | Colorado | United States | 37.1125 | -108.12611 | 6719 | 392 |
| Maryvale | city | Colorado | United States | 39.93306 | -105.78667 | 8933 | 582 |
| Mason Corner | city | Colorado | United States | 40.46694 | -104.70139 | 4717 | 20464 |
| Masontown | city | Colorado | United States | 39.56639 | -106.09972 | 9324 | 1262 |
| Masonville | city | Colorado | United States | 40.4875 | -105.21028 | 5400 | 1764 |
| Massadona | city | Colorado | United States | 40.25278 | -108.63972 | 5971 | 22 |
| Masters | city | Colorado | United States | 40.30944 | -104.24444 | 4448 | 163 |
| Matheson | city | Colorado | United States | 39.17167 | -103.975 | 5790 | 89 |
| Matthews | city | Colorado | United States | 40.47972 | -104.49722 | 4645 | 386 |
| Maxeyville | city | Colorado | United States | 37.61806 | -106.14889 | 7644 | 1009 |
| May Valley | city | Colorado | United States | 38.20167 | -102.61333 | 3746 | 453 |
| Maybell | city | Colorado | United States | 40.51778 | -108.08639 | 5908 | 15 |
| Mayday | city | Colorado | United States | 37.35056 | -108.07611 | 8599 | 598 |
| Maysville | city | Colorado | United States | 38.53861 | -106.18972 | 8307 | 159 |
| McClave | city | Colorado | United States | 38.1375 | -102.85 | 3848 | 42 |
| McClellands | city | Colorado | United States | 40.52806 | -105.08028 | 5009 | 73438 |
| McCoy | city | Colorado | United States | 39.915 | -106.725 | 6797 | 296 |
| McCoy | city | Colorado | United States | 39.91611 | -106.725 | 6797 | 296 |
| McGregor | city | Colorado | United States | 40.47944 | -107.03444 | 6597 | 194 |
| McKenzie Junction | city | Colorado | United States | 38.16417 | -105.19028 | 8467 | 173 |
| Mead | city | Colorado | United States | 40.23333 | -104.99806 | 4999 | 2455 |
| Medina Plaza | city | Colorado | United States | 37.12778 | -104.79167 | 6771 | 89 |
| Meeker | city | Colorado | United States | 40.0375 | -107.9125 | 6354 | 75 |
| Meeker Park | city | Colorado | United States | 40.23389 | -105.53028 | 8448 | 365 |
| Melina | city | Colorado | United States | 38.09944 | -103.18611 | 3904 | 783 |
| Meredith | city | Colorado | United States | 39.36306 | -106.72944 | 7798 | 816 |
| Meridian | city | Colorado | United States | 39.55167 | -104.85833 | 5912 | 46622 |
| Merino | city | Colorado | United States | 40.4825 | -103.35083 | 4032 | 268 |
| Mesa | city | Colorado | United States | 39.16639 | -108.13833 | 5656 | 103 |
| Mesa Lakes | city | Colorado | United States | 39.05 | -108.09167 | 9983 | 113 |
| Mesa Lakes Resort | city | Colorado | United States | 39.04917 | -108.09083 | 9983 | 113 |
| Mesita | city | Colorado | United States | 37.09833 | -105.60139 | 7647 | 140 |
| Messex | city | Colorado | United States | 40.42944 | -103.43611 | 4087 | 210 |
| Meyers Corner | city | Colorado | United States | 40.66806 | -105.01889 | 5137 | 2912 |
| Mid Vail | city | Colorado | United States | 39.615 | -106.36722 | 10610 | 1141 |
| Middleton | city | Colorado | United States | 37.855 | -107.57167 | 9793 | 58 |
| Midland | city | Colorado | United States | 38.85833 | -105.16111 | 9153 | 797 |
| Midway | city | Colorado | United States | 40.43028 | -105.32222 | 6197 | 462 |
| Midway | city | Colorado | United States | 38.74 | -105.14222 | 10597 | 384 |
| Midway | city | Colorado | United States | 38.8425 | -104.97333 | 9199 | 4414 |
| Midway | city | Colorado | United States | 40.22639 | -103.39722 | 4452 | 154 |
| Midway | city | Colorado | United States | 37.14917 | -102.18556 | 3832 | 84 |
| Midway historical | city | Colorado | United States | 38.34389 | -107.05333 | 8996 | 22 |
| Milliken | city | Colorado | United States | 40.32944 | -104.85472 | 4750 | 2714 |
| Millwood | city | Colorado | United States | 37.42167 | -108.33306 | 7627 | 324 |
| Milner | city | Colorado | United States | 40.48472 | -107.01889 | 6597 | 194 |
| Mindeman | city | Colorado | United States | 37.70694 | -103.91611 | 4701 | 49 |
| Mineral Hot Springs | city | Colorado | United States | 38.16889 | -105.92528 | 7690 | 33 |
| Minnehaha | city | Colorado | United States | 38.84944 | -104.95889 | 8185 | 4414 |
| Minturn | city | Colorado | United States | 39.58639 | -106.43028 | 8093 | 1963 |
| Mirage historical | city | Colorado | United States | 38.10278 | -105.86389 | 7604 | 33 |
| Miramonte | city | Colorado | United States | 39.93056 | -105.37222 | 7788 | 4053 |
| Mishawaka | city | Colorado | United States | 40.68722 | -105.36528 | 7178 | 112 |
| Mitchell | city | Colorado | United States | 39.39167 | -106.31861 | 10147 | 343 |
| Model | city | Colorado | United States | 37.37222 | -104.24444 | 5597 | 14 |
| Moffat | city | Colorado | United States | 37.99889 | -105.90944 | 7598 | 33 |
| Mogote | city | Colorado | United States | 37.05944 | -106.09167 | 8185 | 92 |
| Molina | city | Colorado | United States | 39.18917 | -108.05972 | 5682 | 103 |
| Monson | city | Colorado | United States | 37.51611 | -104.70361 | 6397 | 234 |
| Montbello | city | Colorado | United States | 39.79361 | -104.83306 | 5301 | 28147 |
| Monte Vista | city | Colorado | United States | 37.57917 | -106.1475 | 7641 | 1365 |
| Monte Vista Estates | city | Colorado | United States | 39.36528 | -104.92083 | 6568 | 2262 |
| Montezuma | city | Colorado | United States | 39.58111 | -105.86667 | 10511 | 1999 |
| Montrose | city | Colorado | United States | 38.47833 | -107.87556 | 5846 | 11591 |
| Monument | city | Colorado | United States | 39.09167 | -104.87222 | 6994 | 5606 |
| Monument Park | city | Colorado | United States | 37.20694 | -105.04583 | 8398 | 89 |
| Moonridge | city | Colorado | United States | 39.36528 | -105.11694 | 7598 | 495 |
| Morey | city | Colorado | United States | 40.2175 | -105.09222 | 5098 | 34979 |
| Morgan | city | Colorado | United States | 37.32778 | -106.01944 | 7641 | 660 |
| Morrison | city | Colorado | United States | 39.65361 | -105.19056 | 6092 | 34126 |
| Mosca | city | Colorado | United States | 37.64833 | -105.87333 | 7503 | 126 |
| Mosea | city | Colorado | United States | 37.65111 | -105.86889 | 7503 | 126 |
| Moseley | city | Colorado | United States | 40.24889 | -103.75361 | 4301 | 6089 |
| Mount Crested Butte | city | Colorado | United States | 38.90528 | -106.95972 | 9872 | 298 |
| Mount Harris | city | Colorado | United States | 40.48361 | -107.14417 | 6597 | 117 |
| Mount Lincoln | city | Colorado | United States | 39.10611 | -108.38278 | 4707 | 10243 |
| Mount Massive Lakes | city | Colorado | United States | 39.15222 | -106.3 | 9396 | 446 |
| Mount Olivet | city | Colorado | United States | 39.7875 | -105.14167 | 5465 | 103575 |
| Mount Pearl | city | Colorado | United States | 38.9625 | -102.78889 | 4596 | 29 |
| Mount Vernon Club Place | city | Colorado | United States | 39.72278 | -105.29333 | 7601 | 7801 |
| Mountain Meadows | city | Colorado | United States | 40.02389 | -105.38 | 7060 | 2079 |
| Mountain View | city | Colorado | United States | 38.30528 | -108.48333 | 6571 | 112 |
| Mountain View | city | Colorado | United States | 40.5925 | -105.12861 | 5088 | 38882 |
| Mountain View | city | Colorado | United States | 39.77444 | -105.055 | 5396 | 210352 |
| Mountain Village | city | Colorado | United States | 37.93139 | -107.85583 | 9576 | 416 |
| Muleshoe | city | Colorado | United States | 37.58972 | -105.18194 | 9064 | 137 |
| Mulford | city | Colorado | United States | 39.4 | -107.15139 | 6761 | 1417 |
| Mumper Corner | city | Colorado | United States | 40.45194 | -104.69667 | 4648 | 55801 |
| Murray Place | city | Colorado | United States | 37.51611 | -102.99667 | 4671 | 28 |
| Mystic | city | Colorado | United States | 40.57 | -106.99528 | 7447 | 360 |
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