16 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 54401 | Wausau | 31,692 |
| 54403 | Wausau | 24,950 |
| 54476 | Schofield | 19,377 |
| 54455 | Mosinee | 19,025 |
| 54484 | Stratford | 5,529 |
| 54411 | Athens | 5,028 |
| 54474 | Rothschild | 4,589 |
| 54448 | Marathon | 4,280 |
| 54426 | Edgar | 4,275 |
| 54421 | Colby | 3,468 |
| 54405 | Abbotsford | 2,770 |
| 54440 | Hatley | 2,662 |
| 54471 | Ringle | 1,636 |
| 54408 | Aniwa | 1,247 |
| 54427 | Eland | 1,156 |
| 54417 | Brokaw | 4 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 16 ZCTAs in Marathon County, Wisconsin (US Census).