Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Firefly Mine | Mine | 1676 | San Miguel | 38 02 36 N | 108 53 32 W |
| Fireglow Mine | Mine | 2242 | La Plata | 37 17 59 N | 107 48 14 W |
| Fireline Trail | Trail | 3007 | Jackson | 40 55 30 N | 106 49 32 W |
| Fireman and Conductors Mine | Mine | 2573 | Clear Creek | 39 46 36 N | 105 35 13 W |
| Fireman Park | Park | | Adams | 39 49 43 N | 105 02 23 W |
| Fireside Elementary School | School | 1665 | Boulder | 39 58 09 N | 105 09 28 W |
| Fireside Enterprises Quarry | Mine | 1400 | Mesa | 39 04 08 N | 108 33 50 W |
| Firestone | Populated Place | 1515 | Weld | 40 06 45 N | 104 56 12 W |
| Firestone Air Park | Airport | 1524 | Weld | 40 06 20 N | 104 57 18 W |
| Firestone Lake | Reservoir | 1510 | Weld | 40 07 27 N | 104 56 55 W |
| Firestone Mine | Mine | 1514 | Weld | 40 06 39 N | 104 56 16 W |
| First Alkali Creek | Stream | | Fremont | 38 22 15 N | 105 07 46 W |
| First American Plaza Shopping Center | Locale | 1515 | Boulder | 40 10 03 N | 105 05 13 W |
| First Anvil Creek | Stream | | Garfield | 39 33 29 N | 107 58 47 W |
| First Assembly of God | Church | 1748 | Garfield | 39 32 32 N | 107 19 41 W |
| First Assembly of God | Church | 1784 | Montrose | 38 28 57 N | 107 51 29 W |
| First Assembly of God Church | Church | 2017 | La Plata | 37 17 36 N | 107 52 43 W |
| First Baptist Church | Church | 1636 | Boulder | 40 01 13 N | 105 16 47 W |
| First Baptist Church | Church | 2348 | Gunnison | 38 32 44 N | 106 55 47 W |
| First Baptist Church | Church | 2333 | Jefferson | 39 53 57 N | 105 20 40 W |
| First Baptist Church | Church | 1996 | La Plata | 37 16 32 N | 107 52 41 W |
| First Baptist Church | Church | 2115 | Montezuma | 37 28 28 N | 108 30 06 W |
| First Baptist Church | Church | 2138 | Montezuma | 37 20 45 N | 108 17 33 W |
| First Baptist Church | Church | 1890 | Montezuma | 37 20 58 N | 108 35 07 W |
| First Baptist Church | Church | 1771 | Montrose | 38 28 36 N | 107 52 34 W |
| First Baptist Church | Church | 1627 | Montrose | 38 36 23 N | 107 59 14 W |
| First Baptist Church of Hotchkiss | Church | 1624 | Delta | 38 47 59 N | 107 43 24 W |
| First Baptist Church of Rico | Church | 2667 | Dolores | 37 41 30 N | 108 01 57 W |
| First Box Canyon | Valley | | Archuleta | 37 19 46 N | 107 20 20 W |
| First Canyon | Valley | | Archuleta | 37 09 12 N | 106 56 24 W |
| First Canyon | Valley | | La Plata | 37 04 13 N | 108 08 49 W |
| First Chance Mine | Mine | 2335 | Fremont | 38 31 31 N | 105 29 13 W |
| First Chance Mine | Mine | 3206 | San Juan | 37 53 17 N | 107 39 29 W |
| First Christian Church | Church | 1635 | Boulder | 40 00 19 N | 105 15 30 W |
| First Christian Church | Church | 1727 | Delta | 38 52 06 N | 107 35 42 W |
| First Church of Christ Scientist | Church | 1640 | Boulder | 40 01 16 N | 105 16 49 W |
| First Church of Christ Scientist | Church | 1995 | La Plata | 37 16 33 N | 107 52 41 W |
| First Congregational Church | Church | 1643 | Boulder | 40 01 12 N | 105 16 53 W |
| First Creek | Stream | | Adams | 39 52 43 N | 104 51 25 W |
| First Creek | Stream | | Elbert | 39 40 02 N | 104 04 29 W |
| First Creek | Stream | | Grand | 40 06 22 N | 106 11 20 W |
| First Creek | Stream | | Grand | 39 49 42 N | 105 45 32 W |
| First Creek | Stream | | La Plata | 37 30 58 N | 107 32 01 W |
| First Creek | Stream | | Moffat | 40 55 39 N | 107 22 50 W |
| First Creek | Stream | | Routt | 40 43 55 N | 107 08 37 W |
| First Creek School (historical) | School | 1670 | Adams | 39 45 19 N | 104 44 03 W |
| First Creek Ski Cabin | Locale | 3332 | Grand | 39 49 58 N | 105 46 07 W |
| First Extension Owl Ditch | Canal | 2618 | Jackson | 40 34 00 N | 106 07 43 W |
| First Fork Hunter campground | Locale | 2169 | Archuleta | 37 21 22 N | 107 19 36 W |
| First Fork Piedra River | Stream | | Archuleta | 37 21 13 N | 107 19 29 W |
| First Fork Red Creek | Stream | | La Plata | 37 21 27 N | 107 44 32 W |
| First Fork South Fork Piney River | Stream | | Eagle | 39 45 16 N | 106 31 15 W |
| First Fork Trailhead | Locale | 2165 | Archuleta | 37 21 14 N | 107 19 31 W |
| First Meadows | Flat | 2856 | Conejos | 37 07 18 N | 106 25 22 W |
| First Methodist Episcopal Church | Church | 1633 | Boulder | 40 01 11 N | 105 16 40 W |
| First National Bank Mine | Mine | 2428 | Boulder | 40 03 28 N | 105 24 03 W |
| First Park | Flat | 1772 | Montrose | 38 14 50 N | 108 33 02 W |
| First Presbyterian Church | Church | 1777 | Garfield | 39 32 36 N | 107 19 27 W |
| First Presbyterian Church | Church | 1995 | La Plata | 37 16 33 N | 107 52 41 W |
| First Presbyterian Church | Church | 1783 | Montrose | 38 28 01 N | 107 51 40 W |
| First Reservoir | Reservoir | 2070 | Montezuma | 37 06 34 N | 108 19 37 W |
| First Run Ditch | Canal | 2546 | Jackson | 40 48 54 N | 106 32 57 W |
| First Southern Baptist Church | Church | 1996 | La Plata | 37 16 59 N | 107 52 48 W |
| First Southern Baptist Church | Church | 1887 | Montezuma | 37 21 06 N | 108 35 17 W |
| First Spring | Spring | 2269 | Las Animas | 37 06 51 N | 104 28 43 W |
| First Trail Canyon | Valley | | La Plata | 37 23 34 N | 107 57 05 W |
| First United Methodist Church | Church | 1605 | Boulder | 39 59 17 N | 105 06 33 W |
| First United Methodist Church | Church | 1769 | Garfield | 39 32 43 N | 107 19 26 W |
| First United Methodist Church | Church | 2020 | La Plata | 37 17 43 N | 107 51 43 W |
| First United Methodist Church | Church | 1883 | Montezuma | 37 21 17 N | 108 34 33 W |
| First Water Gulch | Valley | | Garfield | 39 35 00 N | 107 55 19 W |
| First Water Spring | Spring | 2524 | Garfield | 39 32 41 N | 108 33 31 W |
| Firstview | Populated Place | 1395 | Cheyenne | 38 48 57 N | 102 32 23 W |
| Fischer Draw | Valley | | Jackson | 40 52 42 N | 106 20 29 W |
| Fischer Lake | Lake | 2466 | Jackson | 40 44 19 N | 106 15 26 W |
| Fischer Lake and Pumping Dam | Dam | 2465 | Jackson | 40 44 19 N | 106 15 26 W |
| Fischer Ranch | Locale | 2469 | Jackson | 40 43 48 N | 106 15 15 W |
| Fish Bay | Bay | 2525 | Grand | 40 10 32 N | 105 53 39 W |
| Fish Canyon | Valley | | Hinsdale | 38 07 58 N | 107 03 01 W |
| Fish Canyon Ridge | Ridge | 3395 | Hinsdale | 38 05 08 N | 107 05 59 W |
| Fish Creek | Stream | | Archuleta | 37 14 17 N | 106 45 24 W |
| Fish Creek | Stream | | Costilla | 37 00 22 N | 105 08 21 W |
| Fish Creek | Stream | | Dolores | 37 43 19 N | 108 14 12 W |
| Fish Creek | Stream | | Gunnison | 38 16 11 N | 107 32 40 W |
| Fish Creek | Stream | | Larimer | 40 58 56 N | 106 04 36 W |
| Fish Creek | Stream | | Larimer | 40 57 05 N | 105 21 40 W |
| Fish Creek | Stream | | Larimer | 40 36 25 N | 105 32 10 W |
| Fish Creek | Stream | | Larimer | 40 32 40 N | 105 17 08 W |
| Fish Creek | Stream | | Larimer | 40 22 14 N | 105 29 35 W |
| Fish Creek | Stream | | Mesa | 38 46 38 N | 108 51 11 W |
| Fish Creek | Stream | | Montezuma | 37 31 26 N | 108 13 19 W |
| Fish Creek | Stream | | Park | 38 57 19 N | 105 19 26 W |
| Fish Creek | Stream | | Routt | 40 35 30 N | 107 10 37 W |
| Fish Creek | Stream | | Routt | 40 25 36 N | 106 58 51 W |
| Fish Creek | Stream | | Routt | 40 28 00 N | 106 49 47 W |
| Fish Creek Campground | Locale | 2450 | Larimer | 40 36 27 N | 105 32 09 W |
| Fish Creek Canyon | Valley | | Routt | 40 20 49 N | 107 07 40 W |
| Fish Creek Dam | Dam | 2051 | Routt | 40 29 36 N | 107 03 02 W |
| Fish Creek Falls | Falls | 2316 | Routt | 40 28 54 N | 106 46 16 W |
| Fish Creek Falls Picnic Area | Locale | 2275 | Routt | 40 28 55 N | 106 46 30 W |
| Fish Creek Falls Trail | Trail | 2865 | Routt | 40 28 40 N | 106 43 36 W |
| Fish Creek Number 1 Dam | Dam | 2846 | Gunnison | 38 16 17 N | 107 33 55 W |
| Fish Creek Number 2 Dam | Dam | 2872 | Gunnison | 38 15 57 N | 107 34 06 W |
| Fish Creek Reservoir | Reservoir | 3006 | Routt | 40 29 37 N | 106 42 20 W |
| Fish Creek Reservoir | Reservoir | 2051 | Routt | 40 29 36 N | 107 03 02 W |
| Fish Creek Reservoir Number 1 | Reservoir | 2848 | Gunnison | 38 16 17 N | 107 33 55 W |
| Fish Creek Reservoir Number 2 | Reservoir | 2873 | Gunnison | 38 15 57 N | 107 34 06 W |
| Fish Creek Rock | Pillar | 2354 | Larimer | 40 59 53 N | 105 26 26 W |
| Fish Creek Trail | Trail | 2836 | Archuleta | 37 12 40 N | 106 42 22 W |
| Fish Creek Trail | Trail | 2708 | Dolores | 37 46 08 N | 108 10 53 W |