Zone 1: (Orange)

Boundaries:

West,north,east,south

Wadsworth,Jewel/Evans,University,Mineral/Ken Caryl

(Sheridan)

Zone 2: (Blue)

Boundaries:

West,north,east,south

C-470,I-70,I-225/Parker Rd,C-470

(Denver,Wheat Ridge,Lakewood,Littleton,Englewood)

Zone 3: (Green)

Boundaries:

West,north,east,south

HWY285/HWY73/Evergreen PKWY/I-70/HWY93,HWY128/Northwest PKWY,E-470,E-470/Smoky Hill Rd/Powhaton Rd/County Line/Delbert Rd/Douglas-Elbert County Line,HWY86/I-25/HWY85/HWY67/HWY126

(Broomfield,Northglenn,Thorton,Westminster,Arvada,Aurora,Golden,Parker,Evergreen)

Zone 4: (Purple)

Boundaries:

West,north,east,south

HWY93/Broadway/Foothills PKWY,Ute HWY66/HWY85/HWY52,CR-45/DIA/I-70

(Superior,Louisville,Lafayette,Boulder,Niwot,Brighton,DIA,Castle Rock)

Zone 5: (Pink)

(Ft. Collins/Greely)