List of states:

[AL] Alabama
[AK] Alaska
[AZ] Arizona
[FL] Florida
[GA] Georgia
[HI] Hawaii
[ID] Idaho
[IN] Indiana
[IA] Iowa
[KS] Kansas
[ME] Maine
[MT] Montana
[NV] Nevada
[OH] Ohio
[OR] Oregon
[TX] Texas
[UT] Utah
[VT] Vermont
[WY] Wyoming

List of cities in Colorado:

Alma, CO 80420
Ault, CO 80610
Avon, CO 81620
Bond, CO 80423
Carr, CO 80612
Como, CO 80432
Cope, CO 80812
Erie, CO 80516
Gill, CO 80624
Hale, CO 80735
Hoyt, CO 80654
Hugo, CO 80821
Jelm, CO 82063
Joes, CO 80822
Kirk, CO 80824
Loma, CO 81524
Mack, CO 81525
Mead, CO 80542
Mesa, CO 81643
Nunn, CO 80648
Otis, CO 80743
Ovid, CO 80744
Pine, CO 80470
Rand, CO 80473
Rico, CO 81332
Rush, CO 80833
Rye, CO 81069
Silt, CO 81652
Vail, CO 81657
Vona, CO 80861
Ward, CO 80481
Yuma, CO 80759