12
- 01201 Pittsfield
- 01220 Adams
- 01222 Ashley Falls
- 01223 Becket
- 01224 Berkshire
- 01225 Cheshire
- 01226 Dalton
- 01229
- 01230 Great Barrington
- 01235 Hinsdale
- 01236 Housatonic
- 01237 Hancock
- 01238 Lee
- 01240 Lenox
- 01242 Lenox Dale
- 01243 Middlefield
- 01244 Mill River
- 01245 Monterey
- 01247 North Adams
- 01253 Otis
- 01254 Richmond
- 01255 Sandisfield
- 01256 Savoy
- 01257 Sheffield
- 01258 South Egremont
- 01259 Southfield
- 01260 South Lee
- 01262 Stockbridge
- 01264 Tyringham
- 01266 West Stockbridge
- 01267 Williamstown
- 01270 Windsor