Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Monk Rock | Pillar | 3250 | Mineral | 37 29 33 N | 107 07 25 W |
| Monkey Creek | Stream | | Park | 39 18 08 N | 105 33 03 W |
| Monkey Face | Summit | 2347 | Douglas | 39 13 11 N | 104 54 04 W |
| Monlux Windmill | Locale | 1417 | Weld | 40 51 25 N | 103 41 41 W |
| Mono Metalist Lode | Mine | 3205 | Jackson | 38 45 03 N | 106 30 29 W |
| Monogram Mesa | Summit | 2181 | Montrose | 38 13 34 N | 108 46 01 W |
| Monogram Mesa Reservoir | Reservoir | 2108 | Montrose | 38 13 19 N | 108 46 35 W |
| Monogram Mine | Mine | 2004 | Montrose | 38 22 17 N | 108 50 55 W |
| Monogram Mines | Mine | 1987 | Montrose | 38 14 33 N | 108 47 04 W |
| Monolith Mine | Mine | 2569 | Jackson | 40 44 12 N | 106 11 48 W |
| Monon Hill | Summit | 2771 | Mineral | 37 50 11 N | 106 56 54 W |
| Monon Mine | Mine | 2794 | Mineral | 37 50 39 N | 106 57 28 W |
| Monongahela Mine | Mine | 3444 | Chaffee | 38 33 00 N | 106 19 02 W |
| Monroe and Barnes Reservoir | Reservoir | 3053 | Mesa | 39 04 15 N | 108 03 03 W |
| Monroe Ditch | Canal | 2591 | Jackson | 40 29 00 N | 106 11 39 W |
| Monroe Homestead | Locale | 2124 | Mesa | 39 08 20 N | 108 06 28 W |
| Monroe Mine | Mine | 1582 | Boulder | 40 00 16 N | 105 02 09 W |
| Monroe Pit | Mine | 1876 | Larimer | 40 55 40 N | 105 09 22 W |
| Monroe Well | Well | 1661 | Las Animas | 37 32 26 N | 104 16 40 W |
| Monson | Populated Place | 1952 | Huerfano | 37 30 58 N | 104 42 15 W |
| Monson Gulch | Valley | | Gunnison | 38 27 04 N | 106 36 19 W |
| Monster Mine | Mine | 2650 | Clear Creek | 39 46 30 N | 105 35 49 W |
| Monster Mine | Mine | 1736 | Montrose | 38 21 08 N | 108 47 39 W |
| Montana Creek | Stream | | Gilpin | 39 51 15 N | 105 36 32 W |
| Montana Mine | Mine | 3549 | San Juan | 37 46 08 N | 107 37 38 W |
| Montana Mine | Mine | 3749 | San Miguel | 37 57 14 N | 107 45 39 W |
| Montana Mountain | Summit | 3334 | Gilpin | 39 51 28 N | 105 35 54 W |
| Montana Vein Mine | Mine | 3419 | San Miguel | 37 50 44 N | 107 49 00 W |
| Montbello | Populated Place | 1620 | Denver | 39 47 37 N | 104 50 01 W |
| Montbello Station Denver Post Office | Post Office | | Denver | 39 46 58 N | 104 51 09 W |
| Montclair Annex School (historical) | School | 1642 | Denver | 39 44 15 N | 104 54 14 W |
| Montclair Elementary School | School | 1634 | Denver | 39 44 01 N | 104 54 37 W |
| Montclair Park | Park | 1636 | Denver | 39 44 07 N | 104 54 32 W |
| Montclair Station Denver Post Office | Post Office | | Denver | 39 44 02 N | 104 53 34 W |
| Monte Camado | Summit | 2246 | Archuleta | 37 02 27 N | 107 12 54 W |
| Monte Carlo Mine | Mine | 3025 | Mineral | 37 52 25 N | 106 55 18 W |
| Monte Cristo Creek | Stream | | Summit | 39 23 35 N | 106 03 09 W |
| Monte Cristo Mine | Mine | 2363 | Clear Creek | 39 44 59 N | 105 32 54 W |
| Monte Cristo Mine | Mine | 2702 | Costilla | 37 35 06 N | 105 17 05 W |
| Monte Cristo Mine | Mine | 3293 | Summit | 39 23 05 N | 106 03 34 W |
| Monte Cristo Mine | Mine | 2892 | Teller | 38 43 19 N | 105 09 59 W |
| Monte Queen Mine | Mine | 2641 | Hinsdale | 38 01 51 N | 107 18 40 W |
| Monte Vista | Populated Place | 2336 | Rio Grande | 37 34 45 N | 106 08 53 W |
| Monte Vista Canal | Canal | 2345 | Rio Grande | 37 26 38 N | 106 08 35 W |
| Monte Vista Cemetery | Cemetery | 2350 | Rio Grande | 37 35 27 N | 106 11 49 W |
| Monte Vista Estates | Populated Place | 1940 | Douglas | 39 21 55 N | 104 55 17 W |
| Monte Vista High School | School | 2336 | Rio Grande | 37 34 37 N | 106 09 15 W |
| Monte Vista Lateral | Canal | 2329 | Rio Grande | 37 31 00 N | 106 08 13 W |
| Monte Vista Municipal Airport | Airport | 2319 | Rio Grande | 37 31 42 N | 106 02 47 W |
| Monte Vista National Wildlife Refuge | Park | 2335 | Rio Grande | 37 29 12 N | 106 08 55 W |
| Montelores (historical) | Locale | 2655 | Montezuma | 37 38 21 N | 108 03 05 W |
| Montelores Bridge | Bridge | 2572 | Montezuma | 37 38 20 N | 108 03 35 W |
| Monterey Elementary School | School | 1586 | Adams | 39 51 09 N | 104 57 40 W |
| Monterey Elementary School | School | 1815 | El Paso | 38 47 59 N | 104 46 03 W |
| Montez Ditch | Canal | 2380 | Huerfano | 37 44 03 N | 105 18 07 W |
| Montez Number 1 Dam | Dam | 2288 | Huerfano | 37 46 42 N | 105 15 08 W |
| Montez Number 5 Dam | Dam | 2268 | Huerfano | 37 45 54 N | 105 15 08 W |
| Montez Number 5 Reservoir | Reservoir | 2268 | Huerfano | 37 45 54 N | 105 15 08 W |
| Montez Reservoir | Reservoir | 3175 | Huerfano | 37 39 14 N | 105 28 20 W |
| Montez Reservoir Number 1 | Reservoir | 2288 | Huerfano | 37 46 42 N | 105 15 08 W |
| Montezuma | Populated Place | 3146 | Summit | 39 34 52 N | 105 52 02 W |
| Montezuma County | Civil | 1861 | Montezuma | 37 20 00 N | 108 33 02 W |
| Montezuma County Community Center | Building | 1889 | Montezuma | 37 21 02 N | 108 35 18 W |
| Montezuma County Court House | Building | 1878 | Montezuma | 37 20 53 N | 108 33 50 W |
| Montezuma County Senior Center | Building | 1889 | Montezuma | 37 21 03 N | 108 35 18 W |
| Montezuma Creek | Stream | | Archuleta | 37 03 29 N | 107 05 27 W |
| Montezuma Mesa | Summit | 2361 | Archuleta | 37 03 58 N | 107 03 21 W |
| Montezuma Mine | Mine | 2506 | Boulder | 40 01 03 N | 105 26 04 W |
| Montezuma Mine | Mine | 2925 | Dolores | 37 40 55 N | 108 01 29 W |
| Montezuma Mine | Mine | 3322 | Montezuma | 37 22 40 N | 108 07 14 W |
| Montezuma Mine | Mine | 1902 | Montezuma | 37 20 56 N | 108 30 32 W |
| Montezuma Mine | Mine | 3879 | Pitkin | 39 01 11 N | 106 50 51 W |
| Montezuma Mine | Mine | 2227 | San Miguel | 37 58 26 N | 108 53 44 W |
| Montezuma Mine | Mine | 3573 | Summit | 39 34 06 N | 105 52 29 W |
| Montezuma Number One Mine | Mine | 3181 | San Juan | 37 52 56 N | 107 34 23 W |
| Montezuma Park | Park | 1892 | Montezuma | 37 21 02 N | 108 35 10 W |
| Montezuma Peak | Summit | 3987 | Archuleta | 37 22 24 N | 106 41 28 W |
| Montezuma Valley | Area | 1861 | Montezuma | 37 19 30 N | 108 34 02 W |
| Montezuma Valley Overlook | Locale | 2383 | Montezuma | 37 17 47 N | 108 26 29 W |
| Montezuma Valley Presbyterian Church | Church | 1878 | Montezuma | 37 20 42 N | 108 34 53 W |
| Montezuma-Cortez High School | School | 1878 | Montezuma | 37 20 31 N | 108 35 21 W |
| Montezuma-Cortez School District | Civil | 1884 | Montezuma | 37 20 51 N | 108 35 01 W |
| Montgomery Creek | Stream | | Larimer | 40 32 35 N | 105 52 44 W |
| Montgomery Dam | Dam | 3297 | Park | 39 21 11 N | 106 04 21 W |
| Montgomery Flats | Flat | 2816 | Pitkin | 39 21 27 N | 106 39 32 W |
| Montgomery Gulch | Valley | | Park | 39 21 52 N | 105 58 23 W |
| Montgomery Mine | Mine | 3202 | Pitkin | 39 13 54 N | 106 15 40 W |
| Montgomery Pass | Gap | 3354 | Larimer | 40 32 34 N | 105 54 25 W |
| Montgomery Pass Trail | Trail | 3228 | Larimer | 40 32 32 N | 105 53 36 W |
| Montgomery Reservoir | Reservoir | 3314 | Park | 39 21 11 N | 106 04 21 W |
| Montgomery Spring | Spring | 2500 | Ouray | 38 07 48 N | 107 47 51 W |
| Montgomery Ward Mine | Mine | 2985 | Clear Creek | 39 42 31 N | 105 42 19 W |
| Monticello Mine | Mine | 3697 | Hinsdale | 37 56 40 N | 107 30 57 W |
| Montoya Reservoir | Reservoir | 2085 | La Plata | 37 09 25 N | 107 56 05 W |
| Montreal Mine | Mine | 3153 | Clear Creek | 39 42 04 N | 105 44 38 W |
| Montrose | Populated Place | 1770 | Montrose | 38 28 42 N | 107 52 34 W |
| Montrose and Delta Canal | Canal | 1835 | Montrose | 38 26 24 N | 107 54 37 W |
| Montrose Arroyo | Valley | | Montrose | 38 29 36 N | 107 52 55 W |
| Montrose BLM Heliport | Airport | 1782 | Montrose | 38 27 29 N | 107 52 05 W |
| Montrose Botanic Gardens | Park | 1792 | Montrose | 38 27 54 N | 107 51 10 W |
| Montrose Chamber of Commerce - Visitors Center | Building | 1775 | Montrose | 38 29 15 N | 107 51 56 W |
| Montrose City Hall | Building | 1770 | Montrose | 38 28 45 N | 107 52 33 W |
| Montrose County | Civil | 2696 | Montrose | 38 25 00 N | 108 16 02 W |
| Montrose County Airport | Airport | 1756 | Montrose | 38 29 28 N | 107 53 19 W |
| Montrose County Court House | Building | 1770 | Montrose | 38 28 42 N | 107 52 36 W |
| Montrose County Fairgrounds | Locale | 1765 | Montrose | 38 29 15 N | 107 52 24 W |
| Montrose Fire District Station Number 1 | Building | 1774 | Montrose | 38 28 35 N | 107 52 18 W |
| Montrose Golf Course | Locale | 1794 | Montrose | 38 28 48 N | 107 51 20 W |
| Montrose High School | School | 1774 | Montrose | 38 28 23 N | 107 52 23 W |
| Montrose Lions Community Building | Building | 1764 | Montrose | 38 29 15 N | 107 52 40 W |