A- Akron, Alamosa, Arvada, Aurora
B- Bailey, Bayfield, Boulder, Brighton, Broomfield, Brush, Buena Vista, Burlington
C- Canon City, Carbondale, Castle Rock, Clifton, Colorado Springs, Commerce City, Cortez, Craig
D- Delta, Denver, Dolores, Durango
E- Eckert, Englewood, Estes Park, Evans, Evergreen
F- Florence, Fort Collins, Fort Lupton, Fort Morgan, Fruita
G- Glenwood Springs, Golden, Granby, Grand Junction, Greeley, Gunnison
H- Hayden, Holyoke, Hugo
K- Keenesburg, Kit Carson, Kremmling
L- La Junta, Lafayette, Lakewood, Lamar, Larkspur, Las Animas, Limon, Littleton, Longmont, Louisville, Loveland
M- Monte Vista, Montrose, Morrison
P- Palisade, Parachute, Parker, Pueblo
R- Rangely, Rifle
S- Salida, Steamboat Springs, Sterling, Strasburg, Stratton
T- Thornton, Trinidad
W- Wellington, Westcliffe, Westminster, Wheat Ridge, Wiggins, Windsor, Woodland Park