42
- 04210 Auburn
- 04216 Andover
- 04217 Bethel
- 04219 Bryant Pond
- 04220 Buckfield
- 04221 Canton
- 04222 Durham
- 04224 Dixfield
- 04226 East Andover
- 04227 East Dixfield
- 04228
- 04231 Stoneham
- 04234 East Wilton
- 04236 Greene
- 04237 Hanover
- 04238 Hebron
- 04239 Jay
- 04240 Lewiston
- 04250 Lisbon
- 04252 Lisbon Falls
- 04253 Livermore
- 04254 Livermore Falls
- 04255 Greenwood
- 04256 Mechanic Falls
- 04257 Mexico
- 04258 Minot
- 04259 Monmouth
- 04260 New Gloucester
- 04261 Newry
- 04263 Leeds
- 04265 North Monmouth
- 04267 North Waterford
- 04268 Norway
- 04270 Oxford
- 04271 Paris
- 04274 Poland
- 04275 Roxbury
- 04276 Rumford
- 04280 Sabattus
- 04281 South Paris
- 04282 Turner
- 04284 Wayne
- 04285 Weld
- 04286 West Bethel
- 04287 Bowdoin
- 04289 West Paris
- 04290 Peru
- 04292 Sumner
- 04294 Wilton