A- Akron, Alamosa, Antonito, Arvada, Aspen, Ault, Aurora, Avon
B- Bailey, Basalt, Bayfield, Bennett, Berthoud, Boulder, Breckenridge, Brighton, Broomfield, Brush, Buena Vista, Burlington
C- Canon City, Carbondale, Castle Rock, Cedaredge, Center, Colorado City, Colorado Springs, Commerce City, Conifer, Cortez, Craig, Crested Butte
D- Del Norte, Delta, Denver, Dillon, Dove Creek, Durango
E- Eagle, Eastlake, Eaton, Edwards, Elizabeth, Englewood, Erie, Estes Park, Evergreen
F- Fairplay, Firestone, Flagler, Florence, Fort Collins, Fort Lupton, Fort Morgan, Fountain, Fowler, Franktown, Frederick, Frisco, Fruita
G- Georgetown, Glenwood Springs, Granby, Grand Junction, Greeley, Gunnison, Gypsum
H- Haxtun, Hayden, Holly
I- Idaho Springs, Ignacio
J- Johnstown
K- Kremmling
L- La Jara, La Junta, La Salle, Lafayette, Lakewood, Lamar, Las Animas, Leadville, Limon, Littleton, Longmont, Louisville, Loveland, Lyons
M- Mancos, Meeker, Monte Vista, Montrose, Monument, Morrison
N- New Castle, Niwot, Norwood, Nucla
O- Olathe, Ordway
P- Pagosa Springs, Palisade, Paonia, Parker, Penrose, Peyton, Pueblo
R- Rangely, Red Feather Lakes, Ridgway, Rifle, Rocky Ford
S- Salida, San Luis, Silverthorne, Simla, Snowmass Village, South Fork, Springfield, Steamboat Springs, Sterling, Strasburg, Stratton
T- Telluride, Thornton, Trinidad
V- Vail
W- Walsenburg, Walsh, Wellington, Westcliffe, Westminster, Wheat Ridge, Windsor, Winter Park, Woodland Park, Wray
Y- Yuma