Colorado - 978.8 Dewey Decimal Numbers for U.S. States and Counties County Dewey Decimal Number Adams 978.881 Alamosa 978.836 Arapahoe 978.882 Archuleta 978.832 Baca 978.899 Bent 978.897 Boulder 978.863 Broomfield 978.864 Chaffee 978.847 Cheyenne 978.892 Clear Creek 978.861 Conejos 978.833 Costilla 978.835 Crowley 978.894 Custer 978.852 Delta 978.818 Denver 978.883 Dolores 978.826 Douglas 978.886 Eagle 978.844 Elbert 978.887 El Paso 978.856 Fremont 978.853 Garfield 978.816 Gilpin 978.862 Grand 978.865 Gunnison 978.841 Hinsdale 978.839 Huerfano 978.851 Jackson 978.866 Jefferson 978.884 Kiowa 978.893 County Dewey Decimal Number Kit Carson 978.891 Lake 978.846 La Plata 978.829 Larimer 978.868 Las Animas 978.896 Lincoln 978.889 Logan 978.875 Mesa 978.817 Mineral 978.838 Moffat 978.812 Montezuma 978.827 Montrose 978.819 Morgan 978.874 Otero 978.895 Ouray 978.822 Park 978.859 Phillips 978.877 Pitkin 978.843 Prowers 978.898 Pueblo 978.855 Rio Blanco 978.815 Rio Grande 978.837 Routt 978.814 Saquache 978.849 San Juan 978.825 San Miguel 978.823 Sedgwick 978.876 Summit 978.845 Teller 978.858 Washington 978.879 Weld 978.872 Yuma 978.878
