| Localité | Code postal |
|---|---|
| Adams, Berkshire | 01220 |
| Alford, Berkshire | 01230, 01266 |
| Allendale, Berkshire | 01201 |
| Ashley Falls, Berkshire | 01222 |
| Becket, Berkshire | 01223 |
| Becket Corners, Berkshire | 01223 |
| Berkshire, Berkshire | 01224 |
| Berkshire Heights, Berkshire | 01230 |
| Big Pond, Berkshire | 01029 |
| Cheshire, Berkshire | 01225 |
| Clarksburg, Berkshire | 01247 |
| Cold Spring, Berkshire | 01253 |
| Dalton, Berkshire | 01226 |
| Drury, Berkshire | 01343 |
| East Otis, Berkshire | 01029 |
| East Windsor, Berkshire | 01270 |
| Egremont, Berkshire | 01230 |
| Florida, Berkshire | 01247 |
| Glendale, Berkshire | 01229 |
| Great Barrington, Berkshire | 01230 |
| Hancock, Berkshire | 01237 |
| Hartsville, Berkshire | 01230 |
| Hinsdale, Berkshire | 01235 |
| Housatonic, Berkshire | 01236 |
| Interlaken, Berkshire | 01266 |
| Lanesborough, Berkshire | 01237 |