12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 12010 | Amsterdam | 27,339 |
| 13339 | Fort Plain | 6,131 |
| 13317 | Canajoharie | 3,970 |
| 12072 | Fultonville | 3,019 |
| 12068 | Fonda | 2,717 |
| 12070 | Fort Johnson | 2,404 |
| 12066 | Esperance | 1,830 |
| 13428 | Palatine Bridge | 1,470 |
| 12166 | Sprakers | 1,459 |
| 13410 | Nelliston | 575 |
| 12069 | Fort Hunter | 387 |
| 12177 | Tribes Hill | 361 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Montgomery County, New York (US Census).