Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Agua Azul | Stream | | Saguache | 37 50 58 N | 106 26 08 W |
| Agua Canyon | Valley | | Archuleta | 36 59 47 N | 107 06 10 W |
| Agua Fria Lake | Lake | 3055 | Jackson | 40 37 49 N | 106 38 17 W |
| Agua Ramon | Locale | 2566 | Rio Grande | 37 42 42 N | 106 33 22 W |
| Agua Ramon Creek | Stream | | Rio Grande | 37 41 45 N | 106 33 08 W |
| Agua Ramon Mountain | Summit | 3309 | Rio Grande | 37 43 46 N | 106 35 20 W |
| Aguaje Canyon | Valley | | Las Animas | 37 13 47 N | 103 43 49 W |
| Aguilar | Populated Place | 1949 | Las Animas | 37 24 10 N | 104 39 12 W |
| Aguilar Heliport | Airport | 1930 | Las Animas | 37 27 04 N | 104 34 58 W |
| Agwalt Tunnel Mine | Mine | 3377 | Lake | 39 14 14 N | 106 14 37 W |
| Ah Wilderness Trails Ranch | Locale | 2285 | La Plata | 37 32 56 N | 107 46 35 W |
| Ahern Windmill | Locale | 1665 | Las Animas | 37 31 58 N | 104 08 09 W |
| Aichers Draw | Valley | | Rio Blanco | 40 03 40 N | 107 50 07 W |
| Aigner Mountain | Summit | 2225 | Routt | 40 40 30 N | 107 15 47 W |
| Aileen Mine | Mine | 2895 | Teller | 38 43 43 N | 105 09 48 W |
| Ainer Mine | Mine | 4028 | Pitkin | 39 01 12 N | 106 50 39 W |
| Air Academy High School | School | 1992 | El Paso | 38 58 08 N | 104 50 45 W |
| Air Dusters Incorporated Airport | Airport | 1458 | Weld | 40 05 35 N | 104 22 32 W |
| Air Force Academy Recreation Area | Park | 2767 | El Paso | 39 00 38 N | 104 59 43 W |
| Air Line Mine | Mine | 2889 | Clear Creek | 39 47 02 N | 105 32 57 W |
| Air Line Mine | Mine | 2750 | Teller | 39 00 01 N | 105 18 02 W |
| Air-Sprayers Number 2 Airport | Airport | 1092 | Prowers | 38 06 00 N | 102 13 03 W |
| Airborne Anomalous Area 57-10 | Mine | 2189 | Moffat | 40 59 26 N | 108 48 39 W |
| Airborne Anomaly 56-10 Mine | Mine | 1692 | Moffat | 40 49 59 N | 108 55 26 W |
| Airborne Anomaly 56-11 Mine | Mine | 1984 | Moffat | 40 48 07 N | 108 50 39 W |
| Airborne Anomaly 56-12 Mine | Mine | 2156 | Moffat | 40 43 15 N | 107 40 13 W |
| Airborne Anomaly 56-13 Mine | Mine | 1990 | Moffat | 40 33 24 N | 107 45 51 W |
| Airborne Anomaly 56-14 Mine | Mine | 1990 | Moffat | 40 33 24 N | 107 45 51 W |
| Airborne Anomaly 56-9 Mine | Mine | 1727 | Moffat | 40 50 32 N | 108 55 21 W |
| Airborne Anomaly B17-101 Mine | Mine | 1949 | Moffat | 40 33 13 N | 107 57 19 W |
| Airborne Anomaly B17-102 Mine | Mine | 1923 | Moffat | 40 33 17 N | 107 50 44 W |
| Airborne Anomaly B17-103 Mine | Mine | 2094 | Moffat | 40 41 38 N | 107 49 11 W |
| Airborne Anomaly B17-104 Mine | Mine | 2071 | Moffat | 40 41 43 N | 107 50 27 W |
| Airborne Anomaly B17-105 Mine | Mine | 2071 | Moffat | 40 41 43 N | 107 50 27 W |
| Airborne Anomaly B17-106 Mine | Mine | 2094 | Moffat | 40 41 38 N | 107 49 11 W |
| Airborne Anomaly B17-107 Mine | Mine | 2094 | Moffat | 40 41 38 N | 107 49 11 W |
| Airborne Anomaly B17-115 Mine | Mine | 2147 | Moffat | 40 44 15 N | 107 48 13 W |
| Airborne Anomaly B17-117 Mine | Mine | 2098 | Moffat | 40 43 25 N | 107 47 03 W |
| Airborne Anomaly B17-126 Mine | Mine | 2056 | Moffat | 40 50 21 N | 107 57 18 W |
| Airborne Anomaly B17-127 Mine | Mine | 2026 | Moffat | 40 45 58 N | 107 57 28 W |
| Airborne Anomaly B17-128 Mine | Mine | 2026 | Moffat | 40 45 58 N | 107 57 28 W |
| Airborne Anomaly B17-89 Mine | Mine | 1874 | Moffat | 40 28 09 N | 107 54 54 W |
| Airborne Anomaly B17-90 Mine | Mine | 1874 | Moffat | 40 28 09 N | 107 54 54 W |
| Airborne Anomaly B17-93 Mine | Mine | 1874 | Moffat | 40 29 05 N | 107 56 09 W |
| Airborne Anomaly B17-94 Mine | Mine | 1857 | Moffat | 40 28 10 N | 107 56 02 W |
| Airborne Anomaly B17-95 Mine | Mine | 1884 | Moffat | 40 29 04 N | 107 57 17 W |
| Airborne Anomaly B17-96 Mine | Mine | 1884 | Moffat | 40 29 04 N | 107 57 17 W |
| Airplane Ridge | Ridge | 2673 | Montezuma | 37 26 54 N | 108 13 33 W |
| Airplane Ridge | Ridge | 2408 | Rio Blanco | 39 53 05 N | 108 34 31 W |
| Airy Spring | Spring | 1570 | Pueblo | 37 52 59 N | 104 19 16 W |
| Ajax Mica Mine | Mine | 2371 | Gilpin | 39 45 13 N | 105 26 17 W |
| Ajax Mine | Mine | 1637 | Boulder | 39 58 40 N | 105 08 12 W |
| Ajax Mine | Mine | 3622 | Saguache | 38 19 22 N | 106 06 37 W |
| Ajax Mine | Mine | 3886 | San Miguel | 37 55 42 N | 107 44 17 W |
| Ajax Mine | Mine | 2916 | San Miguel | 37 48 01 N | 107 40 31 W |
| Ajax Mine | Mine | 3083 | Teller | 38 42 58 N | 105 08 32 W |
| Ajax Number Two Mine | Mine | 2963 | Hinsdale | 38 00 28 N | 107 27 59 W |
| Ajax One Mine | Mine | 2057 | Mesa | 38 40 18 N | 109 01 33 W |
| Ajax Peak | Summit | 3895 | San Miguel | 37 55 43 N | 107 45 20 W |
| Aker Draw | Valley | | Morgan | 40 20 34 N | 103 55 50 W |
| Akers and Tarr Dam | Dam | 1534 | Weld | 40 16 24 N | 104 57 14 W |
| Akers and Tarr Reservoir | Reservoir | 1534 | Weld | 40 16 24 N | 104 57 14 W |
| Akers Ditch | Canal | 2572 | Jackson | 40 58 20 N | 106 30 54 W |
| Akin | Populated Place | 1484 | Mesa | 39 15 17 N | 108 15 47 W |
| Akin Ranch | Locale | 2596 | Custer | 37 57 10 N | 105 19 36 W |
| Akin Reservoir | Reservoir | 2573 | Montezuma | 37 33 29 N | 108 20 41 W |
| Akron | Populated Place | 1420 | Washington | 40 09 38 N | 103 12 52 W |
| Akron Dam | Dam | 1409 | Washington | 40 09 18 N | 103 13 08 W |
| Akron Mine | Mine | 3060 | Gunnison | 38 32 16 N | 106 23 28 W |
| Akron Mine | Mine | 2962 | Gunnison | 38 32 24 N | 106 23 42 W |
| Akron Reservoir | Reservoir | 1409 | Washington | 40 09 18 N | 103 13 08 W |
| Akron-Washington Company Recreation Dam | Dam | 1404 | Washington | 40 08 18 N | 103 13 02 W |
| Akron-Washington Company Recreation Reservoir | Reservoir | 1404 | Washington | 40 08 18 N | 103 13 02 W |
| Akron-Washington County Airport | Airport | 1422 | Washington | 40 10 31 N | 103 13 21 W |
| Aksarben Mine | Mine | 2164 | Chaffee | 38 32 00 N | 106 00 02 W |
| Al Wright Creek | Stream | | Montrose | 38 28 36 N | 108 13 14 W |
| Alabama Mine | Mine | 2611 | Clear Creek | 39 46 07 N | 105 35 34 W |
| Alabama Mine | Mine | 3378 | San Juan | 37 56 42 N | 107 37 34 W |
| Alabama Shaft Mine | Mine | 2930 | Clear Creek | 39 44 14 N | 105 35 12 W |
| Alabama Tunnel Mine | Mine | 2931 | Clear Creek | 39 44 10 N | 105 35 24 W |
| Aladdin Mine | Mine | 3091 | Summit | 39 36 27 N | 105 54 16 W |
| Aladdins Lamp Mine | Mine | 3241 | Teller | 38 44 13 N | 105 08 33 W |
| Alamaditas Mesa | Summit | 2985 | Conejos | 37 08 17 N | 106 17 17 W |
| Alamakee Mine | Mine | 2512 | Boulder | 40 03 58 N | 105 24 21 W |
| Alameda High School | School | 1690 | Jefferson | 39 41 38 N | 105 05 05 W |
| Alameda Junior High School | School | 1660 | Jefferson | 39 42 45 N | 105 03 43 W |
| Alameda School | School | 1603 | Denver | 39 42 42 N | 104 59 25 W |
| Alameda Square Shopping Center | Locale | 1608 | Denver | 39 42 31 N | 105 00 50 W |
| Alamo | Populated Place | 2086 | Huerfano | 37 39 20 N | 104 57 31 W |
| Alamo Canyon | Valley | | La Plata | 37 01 56 N | 107 44 27 W |
| Alamo Creek | Stream | | Eagle | 39 47 07 N | 106 58 34 W |
| Alamo Mine | Mine | 2869 | Teller | 38 43 50 N | 105 09 47 W |
| Alamo Mine Number 1 | Mine | 2057 | Huerfano | 37 39 28 N | 104 57 47 W |
| Alamo Placita | Populated Place | 1605 | Denver | 39 43 15 N | 104 58 33 W |
| Alamo Placita Park | Park | 1605 | Denver | 39 43 14 N | 104 58 33 W |
| Alamosa | Populated Place | 2299 | Alamosa | 37 28 10 N | 105 52 12 W |
| Alamosa Campground | Locale | 2630 | Conejos | 37 22 46 N | 106 20 43 W |
| Alamosa Canyon | Valley | | Las Animas | 37 03 46 N | 104 48 50 W |
| Alamosa County | Civil | 2297 | Alamosa | 37 36 00 N | 105 48 02 W |
| Alamosa Creek Canal | Canal | 2557 | Conejos | 37 20 00 N | 106 14 53 W |
| Alamosa Ditch | Canal | 2296 | Alamosa | 37 27 14 N | 105 51 02 W |
| Alamosa Farm Lateral | Canal | 2304 | Alamosa | 37 24 00 N | 105 55 32 W |
| Alamosa Guard Station | Locale | 2684 | Conejos | 37 23 33 N | 106 23 01 W |
| Alamosa High School | School | 2302 | Alamosa | 37 29 01 N | 105 53 44 W |
| Alamosa National Wildlife Refuge | Park | 2292 | Alamosa | 37 24 30 N | 105 45 22 W |
| Alamosa Plaza | Locale | 2299 | Alamosa | 37 28 05 N | 105 52 27 W |
| Alamosa River | Stream | | Conejos | 37 23 54 N | 106 50 20 W |
| Alamosa River Trail | Trail | 3013 | Conejos | 37 24 30 N | 106 22 39 W |
| Alamosito Canyon | Valley | | Las Animas | 37 06 43 N | 104 51 59 W |
| Alamosito Creek | Stream | | Costilla | 37 05 02 N | 105 19 09 W |