15 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 49423 | Holland | 47,060 |
| 49010 | Allegan | 18,175 |
| 49080 | Plainwell | 16,002 |
| 49348 | Wayland | 13,699 |
| 49323 | Dorr | 11,073 |
| 49408 | Fennville | 10,288 |
| 49078 | Otsego | 10,018 |
| 49419 | Hamilton | 8,681 |
| 49328 | Hopkins | 4,069 |
| 49344 | Shelbyville | 3,778 |
| 49450 | Pullman | 2,998 |
| 49453 | Saugatuck | 2,908 |
| 49070 | Martin | 2,359 |
| 49406 | Douglas | 1,085 |
| 49335 | Moline | 174 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 15 ZCTAs in Allegan County, Michigan (US Census).