| Ghost town | Other names | Current county | Location | Elevation | Established | Abandoned | Industry | Status |
| Abbeyville | | Gunnison |
| 1882 | 1884 | Gold camp | Few remains. | - |
| Aberdeen | | Gunnison |
| 1889 | 1912 | Granite quarry town | Little remains. | - |
| Abeyta | San Isidro | [Las Animas, Colorado|Animas County, Colorado|Las Animas] |
| 1914 | 1914 | Farming town | | - |
| Able | Martin | Bent |
| 1924 | | Railroad station | | - |
| Adelaide | Robinson | Fremont |
| 1894 | 1901 | Railroad and gold mining town | Little remains. | - |
| [Adelaide, Lake County, Colorado|Lake County, Colorado|Adelaide] | Park City, Finntown | Lake |
| 1876 | 1879 | Silver camp | Little remains. | - |
| Adena | | Morgan |
| 1910 | 1949 | Farming town | School and chapel remain. | - |
| Alder | Round Hill | Saguache |
| 1881 | 1927 | Railroad and mining town | Little remains. | - |
| Alice | | Clear Creek |
| 1898 | 1938 | Gold camp | Summer cabins | - |
| Alpine | | Chaffee |
| 1874 | 1904 | Mining town | Some residents remain. | - |
| Alta | | San Miguel |
| 1877 | 1948 | Mining town | Some structures remain. | - |
| Altman | | Teller |
| 1894 | 1911 | Mining town | Some structures remain. | - |
| Amache | Granada War Relocation Center | Prowers |
| 1942 | 1945 | Internment camp | National Historic Site | - |
| American City | | Gilpin |
| | | | | - |
| Ames | | San Miguel |
| 1880 | 1922 | Ames Hydroelectric Generating Plant | Power plant still in operation. | - |
| Anaconda | | Teller |
| 1893 | 1917 | Gold mining town | | - |
| Animas City | Animas | La Plata |
| 1877 | 1900 | Silver camp | Animas City Park | - |
| Animas Forks | | San Juan |
| 1873 | 1915 | Silver mining town | Some structures remain. | - |
| Antero Junction | | Park |
| 1892 | | Ranching town | Some structures remain. | - |
| Apex | | Gilpin |
| 1894 | 1932 | Gold mining town | Some structures remain. | - |
| Arapahoe City | Arapahoe | Jefferson |
| 1858 | 1867 | Placer gold camp | Historical marker near Golden | - |
| Arastra | Arrastra, Silver Lake | San Juan |
| 1890 | 1919 | Mining town | | - |
| Arrow | | Grand | | | 1905 | 1915 | Railroad town | Little remains. |
| Ashcroft | Castle Forks City, Chloride | Pitkin |
| 1880 | 1912 | Silver mining town | National Register Historic Place | - |
| Astor City | | Eagle |
| | | | | - |
| Auraria | | Denver |
| 1858 | 1859 | Placer gold camp | Historical park and Denver neighborhood | - |
| Autobees Plaza | Autobees | Pueblo |
| 1853 | 1882 | Farming village | Little remains. | - |
| Axial | | Moffat |
| 1883 | 1958 | Coal mining town | | - |
| Bachelor | Teller, Bachelor City | Mineral | | | 1892 | 1912 | Silver mining town | Little remains. |
| Badito | Little Orphan | Huerfano |
| 1865 | 1910 | Ranching town and trail stop | Ruins remain. | - |
| Bakerville | | Clear Creek |
| 1865 | | Silver camp | Foundations remain. | - |
| Baldwin | | Gunnison |
| 1909 | 1948 | Coal mining town | Some structures remain. | - |
| Baltimore | | Gilpin |
| 1896 | 1904 | | | - |
| Balzac | | Morgan |
| | | Farming town | | - |
| Bear River | | Routt |
| 1914 | 1940 | | | - |
| Belden | | Eagle |
| | | Mining town | Little remains. | - |
| Bent's Old Fort | Old Fort Bent | Otero |
| 1833 | 1849 | Trading post | National Historic Site | - |
| Berwind | | Las Animas |
| 1888 | 1931 | Coal company town | Many structures remain. | - |
| Beshoar | | Las Animas |
| 1901 | 1903 | Farming town | | - |
| Bijou Basin | | El Paso |
| 1869 | 1907 | Ranching town and railroad station | Little remains. | - |
| Bloom | Iron Spring | Otero |
| 1899 | 1938 | Farming town | | - |
| Boggsville | | Bent |
| 1866 | 1975 | Stage stop and farming town | National Register Historic District | - |
| Bonanza | Bonanza City | Saguache |
| 1880 | 1938 | Silver mining town | Town government reactivated | - |
| Boston | | Baca |
| 1887 | 1893 | Ranching town | Some structures remain. | - |
| Bowen | Aylmer | Las Animas | | | 1900 | 1929 | Coal mining town | |
| Bowerman | | Gunnison | | | 1903 | 1910 | Gold mining town | Some structures remain. |
| Brodhead | | Las Animas |
| 1902 | 1939 | Coal mining town | Little remains. | - |
| Brookfield | | Baca |
| 1887 | 1902 | | | - |
| Brumley | | Lake |
| | | | | - |
| Buckingham | | Weld |
| 1888 | 1966 | Ranching town | Some structures remain. | - |
| Buckskin Joe | Laurette, Buckskin | Park |
| 1861 | 1873 | Gold camp | Buildings removed. | - |
| Buick | Beuck | Elbert | | | 1916 | 1925 | Railroad town | |
| Caddoa | | Bent |
| 1881 | 1958 | Farming town | Some structures remain. | - |
| Calcite | | Fremont |
| 1903 | 1930 | Coal company town | Some structures remain. | - |
| California Ranch | Franktown | Douglas |
| 1861 | 1874 | Stage stop | Historic marker at Franktown | - |
| Calumet | | Huerfano |
| 1904 | | Coal mining town | Structures remain. | - |
| Cameo | | Mesa |
| 1907 | 1969 | Coal mining town | Little remains. | - |
| Camp Hale | | Eagle |
| 1942 | 1945 | U.S. Army mountain training camp | National Monument | - |
| Campbelltown | | Gunnison |
| | | | | - |
| Capers Spur | | Pueblo |
| | | | | - |
| Capitol City | Galena City | Hinsdale |
| 1877 | 1920 | Silver mining town | Structures remain. | - |
| Carbonate | | Garfield |
| 1879 | 1886 | Silver camp | Town government reactivated | - |
| Cardinal | | Boulder |
| 1905 | 1919 | | | - |
| Caribou | | Boulder |
| 1871 | 1917 | Silver mining town | Some structures remain. | - |
| Carpenter | | Mesa |
| 1890 | 1925 | Coal mining town | Little remains. | - |
| Carrizo | Carriso | Baca | | | 1887 | 1916 | Ranching town | |
| Carson | | Hinsdale |
| 1889 | 1903 | Mining town | Many structures remain. | - |
| Chandler | | Fremont |
| 1890 | 1942 | Coal company town | | - |
| Chattanooga | | San Juan |
| 1883 | 1894 | Mining camp | Some structures remain. | - |
| Chihuahua | | Summit | | | 1880 | 1892 | Mining camp | |
| Chimney Rock | | Archuleta |
| 1950 | 1967 | | | - |
| Chivington | | Kiowa |
| 1887 | 1991 | Ranching town | Many structures remain. | - |
| Clarkville | | Yuma |
| 1933 | 1954 | Farming town | | - |
| Climax | | Lake |
| 1887 | 1962 | Railroad and mining town | Removed for Climax molybdenum mine | - |
| Coalmont | | Jackson |
| 1911 | 1983 | Coal mining town | Structures remain. | - |
| Colfax | | Custer | | | 1870 | 1879 | Communal farming town | |
| Columbine | | Routt |
| 1896 | 1867 | Gold mining town | National Register Historic District | - |
| Corona | | Grand |
| 1904 | 1928 | Railroad station with snowshed and hotel | Foundations remain. | - |
| Cross Mountain | | Moffat | | | 1919 | 1943 | | |
| Crystal | Crystal City | Gunnison |
| 1881 | 1917 | Mining town | Structures remain. | - |
| Dakan | | Douglas | | | 1896 | 1898 | Mining camp | Nothing remains. |
| Dallas | Dallas City | Ouray |
| 1880 | 1899 | Stage stop and railroad station | Little remains. | - |
| Dayton | | Lake |
| 1866 | 1868 | Gold camp | Site in Twin Lakes CDP | - |
| De Nova | Dillingham | Washington |
| 1911 | 1953 | | | - |
| Dearfield | | Weld |
| 1910 | 1948 | African American farming community | National Register Historic District | - |
| Decatur | | Summit | | | 1879 | 1885 | Mining camp | |
| Delagua | | Las Animas |
| 1903 | 1954 | Coal company town | | - |
| Delcarbon | | Huerfano |
| 1915 | 1953 | Coal mining town | | - |
| Dick | | Weld |
| 1870 | 1979 | Railroad and coal mining town | | - |
| Dudley | | Park |
| 1872 | 1880 | | | - |
| Duncan | | Saguache |
| 1874 | 1900 | Gold camp | Duncan Cabin preserved | - |
| Dutchtown | | Grand |
| 1879 | 1884 | Silver camp | Site in Rocky Mountain National Park | - |
| Dyersville | | Summit |
| 1881 | 1908 | Mining town | Some frames remain. | - |
| Eastdale | | Costilla |
| 1890 | 1909 | Farming town | | - |
| Eastonville | Easton | El Paso |
| 1872 | 1932 | Railroad and farming town | Some structures remain. | - |
| Edgerton | | El Paso |
| 1870 | 1902 | Railroad town | | - |
| Eldora | Happy Valley, El Dorado | Boulder |
| 1897 | 1977 | Mining town | National Register Historic District | - |
| Elkton | | Gunnison |
| 1881 | 1882 | Mining camp | Many structures remain. | - |
| Elkton | | Teller |
| 1895 | 1926 | Gold mining town | Some structures remain. | - |
| Eureka | | San Juan |
| 1873 | 1942 | Gold mining town | Some structures remain. | - |
| Floresta | | Gunnison |
| 1897 | 1919 | Coal mining town | Little remains. | - |
| Fondis | | Elbert |
| 1895 | 1954 | Ranching town | | - |
| Forbes | | Las Animas |
| 1889 | 1929 | | | - |
| Fort Julesburg | | Sedgwick |
| | | Trading post | | - |
| Fort Saint Vrain | Saint Vrain | Weld |
| 1837 | 1849 | Trading post | monument | - |
| Fort Sedgwick | Camp Rankin Fort Rankin | Sedgwick |
| 1866 | 1869 | U.S. Army post | | - |
| Fort Vasquez | | Weld |
| | | Trading post | | - |
| Franceville | | El Paso |
| 1881 | 1894 | Coal mining town | | - |
| Frankstown | | Douglas |
| 1859 | 1864 | Placer gold camp | Nothing remains. | - |
| Fulford | | Eagle |
| 1892 | 1910 | Mining camp | Structures remain. | - |
| Garo | | Park |
| 1880 | 1955 | Ranching town | Some structures remain. | - |
| Gato | | Archuleta |
| 1899 | 1954 | Ranching town | | - |
| Geneva City | | Clear Creek |
| | | Mining camp | Some structures remain. | - |
| Gillett | West Beaver Park, Cripple City, Gillette | Teller |
| 1894 | 1913 | Gold mining town | Little remains. | - |
| Gilman | | Eagle |
| 1886 | 1985 | Mining company town | Company town largely intact | - |
| Gladstone | | San Juan |
| 1878 | 1912 | | | - |
| Gold Park | | Eagle |
| 1881 | 1983 | Gold mining town | | - |
| Goldfield | | Teller |
| 1895 | 1932 | Gold mining town | Many structures remain. | - |
| Gothic | | Gunnison |
| 1879 | 1914 | Silver mining town | Rocky Mountain Biological Laboratory | - |
| Grand Island | | Boulder |
| | | | | - |
| Graysill Mines | | San Juan |
| 1945 | 1963 | Uranium mining town | Structures remain. | - |
| Griffth | | La Plata |
| 1909 | 1924 | | | - |
| Guston | | Ouray |
| 1883 | 1898 | Silver mining town | Structures remain. | - |
| Gwillimsville | | El Paso | | | 1878 | 1890 | Ranching town | |
| Hamilton | | Park | | | 1860 | 1881 | Placer gold camp | Little remains. |
| Hancock | | Chaffee |
| 1880 | 1904 | Railroad and mining town | Little remains. | - |
| Haybro | Junction City | Routt |
| 1912 | 1951 | Coal mining town | Little remains. | - |
| Henderson Island | Island Station | Adams |
| 1859 | 1959 | Trail stop | Adams County Fairgrounds | - |
| Henson | | Hinsdale |
| 1871 | 1913 | Gold mining town | Structures remain. | - |
| Hessie | | Boulder |
| 1898 | 1902 | | | - |
| Highland | | Denver |
| 1858 | 1859 | Placer gold camp | Denver neighborhood | - |
| Holy Cross City | Holy Cross | Eagle |
| 1880 | 1905 | Mining town | Few structures remain. | - |
| Homestead Meadows | | Larimer |
| 1889 | 1952 | Ranch and logging community | National Register Historic District | - |
| Horseshoe | Horse Shoe Doran | Park |
| 1880 | 1907 | | | - |
| Howardsville | Bullion City | San Juan |
| 1874 | 1939 | Gold mining town | Modern mill | - |
| Howbert | | Park | | | 1887 | 1933 | Railroad and ranching town | Submerged in Eleven Mile Reservoir |
| Husted | | El Paso | | | 1878 | 1920 | Railroad and ranching town | Site in U.S. Air Force Academy |
| Independence | Farwell, Sparkill, Chipeta | Pitkin |
| 1879 | 1899 | Gold camp | National Register Historic District | - |
| Independence | Macon | Teller |
| 1899 | 1954 | Gold mining town | Little remains. | - |
| Iola | | Gunnison |
| 1896 | 1963 | Railroad town | Submerged in Blue Mesa Reservoir | - |
| Iron City | | Chaffee |
| | | | | - |
| Ironton | | Ouray |
| 1883 | 1920 | Silver mining town | Some structures remain. | - |
| Jimmy's Camp | Jimmy Camp | El Paso | | | 1833 | 1879 | Trading post and stage stop | Nothing remains. |
| Juanita | | Archuleta |
| 1904 | 1912 | Railroad and ranching town | Railroad structures remain. | - |
| Keota | | Weld |
| 1888 | 1973 | Railroad and ranching town | Structures remain. | - |
| Kings Canyon | | Jackson |
| 1928 | 1936 | Copper mining town | Little remains. | - |
| Kokomo | | Summit |
| 1879 | 1965 | Mining town | Buried under mine waste | - |
| La Veta Pass | Veta Pass, Uptop | Huerfano |
| 1877 | 1962 | Railroad and tourism town | National Register Historic District | - |
| Last Chance | | Washington |
| 1925 | | Farming town and highway stop | Structures remain. | - |
| Leavick | | Park |
| 1896 | 1899 | | | - |
| Lenado | | Pitkin |
| 1891 | 1907 | Mining town | Some structures remain. | - |
| Leonard | | San Miguel |
| 1900 | 1940 | | | - |
| Liberty | | Saguache |
| 1900 | 1921 | Gold mining town | | - |
| Logtown | | La Plata |
| | | | | - |
| Ludlow | | Las Animas |
| 1896 | 1954 | Coal mining town | National Historic Landmark | - |
| Lulu City | | Grand |
| 1879 | 1951 | Silver camp | Three cabins remain. | - |
| Lytle | Turkey Creek | El Paso |
| 1877 | 1920 | Farming town | Schoolhouse remains. | - |
| Madrid | Madrid Plaza | Las Animas |
| 1864 | 1917 | Farming town | | - |
| Malachite | | Huerfano |
| 1880 | 1915 | Placer gold camp | | - |
| Malta | | Lake |
| 1875 | 1955 | Silver mining town | Schoolhouse remains. | - |
| Manhattan | | Larimer |
| 1887 | 1900 | Gold camp | Cemetery remains. | - |
| Masters | | Weld |
| 1900 | 1967 | Railroad and farming town | | - |
| Mayday | | La Plata |
| 1913 | 1914 | Mining town | Structures remain. | - |
| Mayflower Gulch | | Summit | | | | | Mining town | Structures remain. |
| McConnellsville | | El Paso | | | | | Railroad station | |
| McFerran | | El Paso | | | 1889 | 1896 | Farming town | |
| McPhee | | Montezuma | | | 1924 | 1948 | Logging company town | Submerged in McPhee Reservoir |
| Middleton | | San Juan |
| 1883 | | Gold mining town | Little remains. | - |
| Midway | | Gunnison |
| | | | | - |
| Mineral Point | | Weld | | | 1873 | 1897 | Mining camp | Some structures remain. |
| Mirage | Cotton Creek | Saguache |
| 1875 | 1927 | | | - |
| Missouri City | Missouri Flats | Gilpin |
| 1860 | 1863 | Placer gold camp | A single grave remains. | - |
| Montana | Montana City | Denver |
| 1858 | 1859 | Placer gold camp | Near Grant-Frontier Park in south Denver | - |
| Montezuma | | Summit |
| 1865 | | Silver mining town | Town government reactivated | - |
| Montgomery | Montgomery City | Park | | | 1881 | 1888 | Gold camp | Submerged in Montgomery Reservoir |
| Morley | | Las Animas |
| 1878 | 1956 | Railroad and coal mining town | | - |
| Mound City | Mound | Teller |
| 1893 | 1894 | | | - |
| Mount Vernon | | Jefferson |
| 1859 | 1885 | Trail stop | Located in Matthews/Winters Park | - |
| Mystic | | Routt |
| 1910 | 1942 | Ranching town | Little remains. | - |
| Needleton | | San Juan |
| 1882 | 1910 | Railroad town | | - |
| Nevadaville | Nevada, Nevada City, Bald Mountain | Gilpin |
| 1861 | 1921 | Mining town | Some residents remain. | - |
| Niegoldstown | | San juan | | | 1878 | 1881 | Mining camp | Some structures remain. |
| Ninetyfour | | Clear Creek |
| | | | | - |
| Norrie | Norrie Colony | Pitkin |
| | | Railroad and logging camp | Summer cabins | - |
| North Creede | Jimtown | Mineral |
| 1908 | 1919 | Silver mining town | Few structures remain. | - |
| North Star | Lake's Camp | Gunnison | | | 1889 | 1894 | Mining camp | Some structures remain. |
| Ohio | Ohio City | Gunnison |
| 1880 | 1972 | Mining town | Some residents | - |
| Old Mountain View | | El Paso |
| | | | | - |
| Old Roach | | Larimer |
| 1923 | 1938 | Logging company town | | - |
| Old Zounds | O.Z. | El Paso | | | 1877 | 1889 | Ranching village | |
| Orient | | Saguache |
| 1894 | 1905 | Iron mining town | Two adjacent townsites | - |
| Oro City | Oro | Lake |
| 1861 | 1895 | Gold camp | | - |
| Pagosa Junction | | Archuleta |
| 1899 | 1954 | Railroad town | Some structures remain. | - |
| Pando | | Eagle |
| 1891 | 1942 | Railroad station | | - |
| Pandora | | San Miguel |
| 1881 | 1902 | Mining camp | Little remains. | - |
| Park City | Park | Park |
| 1879 | 1891 | | | - |
| Parkville | Park City | Summit |
| 1861 | 1866 | Gold camp | Cemetery remains. | - |
| Parrott City | Parrott | La Plata |
| 1876 | 1898 | Mining camp | Remnants of Mayday | - |
| Pearl | | Jackson |
| 1889 | 1919 | Copper mining town | Many structures remain. | - |
| Perigo | | Gilpin |
| 1895 | 1905 | | | - |
| Phoenix | | Gilpin |
| | | | | - |
| Pieplant Mill | Pieplant | Gunnison |
| 1904 | 1906 | Mining town | | - |
| Pinneo | | Washington |
| 1883 | 1931 | Farming town | | - |
| Pittsburg | | Gunnison |
| 1881 | 1896 | Mining town | Little remains. | - |
| Platte Station | Platte | Park | | | 1876 | 1894 | Stage stop | |
| Poudre City | | Larimer |
| 1888 | 1891 | Gold mill town | Nothing remains. | - |
| Preston | | Summit |
| 1875 | 1889 | Gold camp | | - |
| Primero | | Las Animas |
| 1901 | 1933 | Coal company town | | - |
| Proctor | | Logan |
| 1908 | 1963 | Railroad and farming town | Some structures remain. | - |
| Purcell | | Weld |
| 1909 | 1951 | Farming town | Some structures remain. | - |
| Quartz | | Gunnison | | | 1882 | 1886 | Gold camp | Historical marker |
| Quartzville | | Park |
| | | | | - |
| Querida | Bassickville Bassick City | Custer |
| 1880 | 1906 | Silver mining town | | - |
| Red Mountain | Red Mountain Town | Ouray |
| 1883 | 1913 | Silver mining town | Few original structures | - |
| Rexford | | Summit |
| 1881 | 1883 | Gold camp | Structures remain. | - |
| Robinson | Ten Mile | Summit | | | 1879 | 1911 | Mining town | |
| Romley | | Chaffee |
| 1886 | 1924 | Railroad and mining town | Little remains. | - |
| Roses Cabin | | Hinsdale | | | 1874 | 1887 | Mining camp | Little remains. |
| Rosita | | Custer |
| 1874 | 1966 | Ranching and silver mining town | One business open | - |
| Ruby | Lincoln Creek | Pitkin |
| | | Mining camp | Some structures remain. | - |
| Ruby City | | Ouray | | | 1878 | 1879 | Mining camp | Some structures remain. |
| Ruedi | | Eagle |
| 1889 | 1941 | | Under Ruedi Reservoir | - |
| Russell Gulch | | Gilpin |
| 1859 | 1943 | Placer gold camp | Some residents remain. | - |
| Russellville | | Douglas | | | 1862 | 1862 | Placer gold camp | Later structures remain. |
| St. Charles | | Denver |
| 1858 | 1858 | Placer gold camp | Site around Denver Union Station | - |
| Saint Elmo | | Chaffee |
| 1880 | 1952 | Railroad and mining town | National Register Historic District | - |
| Saint Vrain | | Weld |
| 1837 | 1875 | Trading village | Adjacent to site of Fort Saint Vrain | - |
| Saint Vrains | | Weld |
| 1915 | 1918 | Farming town | | - |
| Saints John | Coleyville, Saint John | Summit |
| 1863 | 1881 | Silver camp | Some residents remain. | - |
| San Juan City | San Juan | Mineral |
| 1874 | 1923 | Stage stop | One cabin remains. | - |
| Schofield | | Gunnison | | | 1880 | 1886 | Mining camp | Little remains. |
| Sedgewick | | Saguache |
| 1880 | 1885 | | | - |
| Sellar | | Pitkin | | | 1888 | 1918 | Stage stop | Structures remain. |
| Serene | | Weld |
| 1923 | 1942 | Coal company town | | - |
| Seven Lakes | | Teller |
| 1877 | | Mining and tourist town | Mine structures remain. | - |
| Shavano | | Chaffee |
| 1880 | 1930 | | | - |
| Sherman | | Hinsdale | | | 1890 | 1892 | Mining camp | Some structures remain. |
| Sherrod | | Gunnison | | | 1904 | 1906 | Mining camp | Little remains. |
| Shirley | | Chaffee |
| | | | | - |
| Siloam | | Pueblo |
| 1891 | 1943 | Farming town | Little remains. | - |
| Silver Creek | Daileyville | Clear Creek |
| 1875 | | Silver camp | | - |
| Silverdale | | Clear Creek |
| 1882 | 1882 | Silver camp | | - |
| Sligo | | Weld | | | 1908 | 1941 | Railroad town | |
| Smuggler | | San Miguel | | | 1895 | 1928 | Mining camp | Structures remain. |
| Sneffels | Mount Sneffels | Ouray |
| 1879 | 1930 | Mining camp | | - |
| Sopris | | Las Animas |
| 1888 | 1969 | Coal mining town | Submerged in Trinidad Lake | - |
| South Denver | | Denver |
| 1886 | 1894 | Residential community | Several Denver neighborhoods | - |
| Spar City | Spar | Mineral |
| 1892 | 1895 | Silver mining town | Summer cabins | - |
| Stonewall | | Chaffee |
| | | | | - |
| Stout | Petra | Larimer |
| 1882 | 1908 | Sandstone quarry town | Submerged in Horsetooth Reservoir | - |
| Summitville | Summit | Rio Grande |
| 1876 | 1947 | Gold mining town | Many structures remain. | - |
| Sunset | | Boulder |
| 1883 | 1921 | Gold mining town | Structures remain. | - |
| Swallows | | Pueblo |
| 1892 | 1947 | Railroad town | Submerged in Pueblo Reservoir | - |
| Swan | | Chaffee |
| | | | | - |
| Swandyke | | Summit |
| 1898 | 1910 | Gold mining town | Structures remain. | - |
| Table Rock | | El Paso | | | 1870 | 1893 | Ranching town | |
| Tarryall | | Park | | | 1859 | 1863 | Placer gold camp | Nothing remains. |
| Tarryall | Puma City | Park |
| 1896 | 1933 | Gold mining town | Some residents remain. | - |
| Teller City | | Jackson |
| 1879 | 1885 | Silver camp | Structures remain. | - |
| Tellurium | | Hinsdale | | | 1875 | 1880 | Mill town | Few structures remain. |
| Tercio | | Las Animas |
| 1902 | 1949 | Coal company town | Some structures remain. | - |
| Thomasville | Calcium | Pitkin |
| 1888 | 1918 | Railroad and lime kiln town | Many structures remain. | - |
| Tiger | | Summit |
| 1919 | 1940 | Mining company town | Little remains. | - |
| Tincup | Virginia, Virginia City, Tin Cup | Gunnison |
| 1878 | 1918 | Gold mining town | Many structures and summer homes | - |
| Tioga | | Huerfano |
| 1907 | 1954 | Ranching town | Little remains. | - |
| Tomboy | Savage Basin Camp | San Miguel |
| 1894 | 1926 | Gold camp and later zinc mine | Some structures remain. | - |
| Tomichi | Argenta | Chaffee | | | 1880 | 1899 | Mining camp | Cemetery remains. |
| Trump | | Park |
| 1928 | 1931 | Ranching town | | - |
| Tuckerville | | La Plata |
| | | | | - |
| Tungsten | | Boulder |
| 1916 | 1949 | Tungsten mining town | | - |
| Turret | | Chaffee |
| 1898 | 1939 | Granite quarry town | Privately held | - |
| Tuttle | | Kit Carson |
| 1883 | 1918 | Farming town | Foundations remain. | - |
| Ula | | Custer |
| 1871 | 1891 | Ranching town | Cemetery remains. | - |
| Uravan | | Montrose |
| 1936 | 1986 | Uranium company town | Little remains. | - |
| Vicksburgh | Vicksburg | Chaffee |
| 1881 | 1885 | Mining camp | National Register Historic District | - |
| Virginia Dale | | Larimer |
| 1862 | 1967 | Stage stop | Stage station preserved | - |
| Virginius | | Ouray | | | 1887 | 1894 | Mining camp | Mine structures remain. |
| Vulcan | | Gunnison |
| 1894 | 1912 | Gold mining town | Several structures remain. | - |
| Wagon Wheel Gap | Thornton | Mineral |
| 1848 | 1957 | Stage stop & resort | Dude ranch & hot springs | - |
| Waldorf | | Gilpin | | | 1868 | 1912 | Mining town | Little remains. |
| Wason | | Mineral |
| 1891 | 1904 | Silver mining town | Located on Wason Ranch | - |
| Weaver | | Mineral |
| 1891 | 1895 | Silver mining town | Few structures remain. | - |
| Webster | | Park |
| 1877 | 1909 | Ore shipping town | Little remains. | - |
| Wezel | | Lincoln |
| 1911 | 1919 | | | - |
| Wideawake | | Gilpin |
| | | | | - |
| Winfield | | Chaffee |
| 1861 | 1912 | Silver mining town | Several structures remain. | - |
| Wortman | | Lake |
| 1900 | 1919 | | | - |
| Yankee | | Clear Creek |
| 1893 | 1910 | | | - |