| Zip Code | City | Population ↓ |
|---|---|---|
| 49442 | Muskegon | 44,766 |
| 49441 | Muskegon | 36,779 |
| 49444 | Muskegon | 26,372 |
| 49445 | Muskegon | 21,289 |
| 49457 | Twin Lake | 11,086 |
| 49461 | Whitehall | 9,707 |
| 49437 | Montague | 6,895 |
| 49415 | Fruitport | 6,330 |
| 49451 | Ravenna | 6,298 |
| 49425 | Holton | 3,520 |
| 49318 | Casnovia | 1,604 |
| 49440 | Muskegon | 1,492 |
| 49303 | Bailey | 772 |
| 49443 | Muskegon | 72 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Muskegon County, Michigan (US Census).