16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 54401 | Wausau | 31,292 |
| 54403 | Wausau | 24,874 |
| 54476 | Schofield | 19,767 |
| 54455 | Mosinee | 19,168 |
| 54484 | Stratford | 5,557 |
| 54411 | Athens | 4,943 |
| 54426 | Edgar | 4,285 |
| 54448 | Marathon | 4,225 |
| 54474 | Rothschild | 4,209 |
| 54421 | Colby | 3,831 |
| 54405 | Abbotsford | 2,843 |
| 54440 | Hatley | 2,699 |
| 54471 | Ringle | 1,643 |
| 54408 | Aniwa | 1,235 |
| 54427 | Eland | 1,117 |
| 54417 | Brokaw | 6 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Marathon County, Wisconsin (US Census).