| Zip Code | City | Population ↓ |
|---|---|---|
| 1301 | Greenfield | 17,880 |
| 1364 | Orange | 7,643 |
| 1373 | South Deerfield | 4,921 |
| 1376 | Turners Falls | 4,868 |
| 1370 | Shelburne Falls | 3,713 |
| 1375 | Sunderland | 3,658 |
| 1360 | Northfield | 2,871 |
| 1351 | Montague | 2,741 |
| 1337 | Bernardston | 2,470 |
| 1340 | Colrain | 1,890 |
| 1054 | Leverett | 1,793 |
| 1354 | Gill | 1,747 |
| 1344 | Erving | 1,631 |
| 1341 | Conway | 1,620 |
| 1330 | Ashfield | 1,607 |
| 1072 | Shutesbury | 1,413 |
| 1339 | Charlemont | 1,396 |
| 1342 | Deerfield | 1,321 |
| 1355 | New Salem | 1,009 |
| 1378 | Warwick | 814 |
| 1379 | Wendell | 779 |
| 1349 | Millers Falls | 764 |
| 1367 | Rowe | 504 |
| 1346 | Heath | 409 |
| 1347 | Lake Pleasant | 197 |
| 1093 | Whately | 145 |
| 1350 | Monroe Bridge | 103 |
| 1338 | Buckland | 65 |
| 1380 | Wendell Depot | 25 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 29 ZCTAs in Franklin County, Massachusetts (US Census).