664
- 66401 Alma
- 66402 Auburn
- 66403 Axtell
- 66404 Baileyville
- 66406 Beattie
- 66407 Belvue
- 66408 Bern
- 66409 Berryton
- 66411 Blue Rapids
- 66412 Bremen
- 66413 Burlingame
- 66414 Carbondale
- 66415 Centralia
- 66416 Circleville
- 66417 Corning
- 66418 Delia
- 66419 Denison
- 66422 Emmett
- 66423 Eskridge
- 66424 Everest
- 66425 Fairview
- 66427 Frankfort
- 66428 Goff
- 66429 Grantville
- 66431 Harveyville
- 66432 Havensville
- 66434 Hiawatha
- 66436 Holton
- 66438 Home
- 66439 Horton
- 66440 Hoyt
- 66441 Junction City
- 66442 Fort Riley
- 66449 Leonardville
- 66451 Lyndon