422
- 42202 Adairville
- 42204 Allensville
- 42206 Auburn
- 42207 Bee Spring
- 42210 Brownsville
- 42211 Cadiz
- 42214 Center
- 42215 Cerulean
- 42217 Crofton
- 42220 Elkton
- 42223 Fort Campbell
- 42232 Gracey
- 42234 Guthrie
- 42236 Herndon
- 42240 Hopkinsville
- 42254 La Fayette
- 42256 Lewisburg
- 42259 Mammoth Cave
- 42261 Morgantown
- 42262 Oak Grove
- 42265 Olmstead
- 42266 Pembroke
- 42273 Rochester
- 42274 Rockfield
- 42275 Roundhill
- 42276 Russellville
- 42280 Sharon Grove
- 42285 Sweeden
- 42286 Trenton