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 Maine:

ME 4759
Acton, ME 4001
Alna, ME 4535
Anson, ME 4911
Bath, ME 4530
Beals, ME 4611
Casco, ME 4015
Corea, ME 4624
Derby, ME 4463
Eliot, ME 3903
Etna, ME 4434
Gray, ME 4039
Hiram, ME 4041
Hope, ME 4847
Jay, ME 4239
Lee, ME 4455
Leeds, ME 4263
Lubec, ME 4652
Minot, ME 4258
Newry, ME 4261
Orono, ME 4473
Oxbow, ME 4764
Perry, ME 4667
Peru, ME 4290
Saco, ME 4072
Solon, ME 4979
Surry, ME 4684
Troy, ME 4987
Union, ME 4862
Unity, ME 4988
Wayne, ME 4284
Weld, ME 4285
Wells, ME 4090
Winn, ME 4495
York, ME 3909