A- Alamosa, Arvada, Aspen, Ault, Aurora, Avon
B- Bailey, Basalt, Blanca, Boulder, Breckenridge, Brighton, Broomfield, Buena Vista
C- Canon City, Carbondale, Castle Rock, Cedaredge, Colorado Springs, Commerce City, Conifer, Cortez, Crested Butte
D- Delta, Denver, Dillon, Durango
E- Eaton, Edwards, Englewood, Erie, Evergreen
F- Florence, Fort Collins, Fort Lupton, Fort Morgan, Fraser, Frederick, Frisco
G- Glenwood Springs, Golden, Grand Junction, Greeley, Green Mountain Falls, Gunnison
J- Julesburg
K- Kremmling
L- La Junta, Lafayette, Lakewood, Lamar, Limon, Littleton, Longmont, Louisville, Loveland, Lyons
M- Manitou Springs, Montrose, Monument
O- Ouray
P- Pagosa Springs, Palmer Lake, Parachute, Parker, Pueblo
R- Ridgway, Rifle, Rush, Rye
S- Silverthorne, Steamboat Springs
T- Telluride, Thornton
U- U S A F Academy
V- Vail, Victor
W- Westminster, Wheat Ridge, Whitewater, Windsor, Woodland Park