| Zip Code | City | Population ↓ |
|---|---|---|
| 54481 | Stevens Point | 27,544 |
| 54467 | Plover | 14,739 |
| 54482 | Stevens Point | 9,673 |
| 54406 | Amherst | 3,783 |
| 54473 | Rosholt | 2,525 |
| 54423 | Custer | 2,140 |
| 54443 | Junction City | 2,140 |
| 54909 | Almond | 1,988 |
| 54921 | Bancroft | 1,436 |
| 54407 | Amherst Junction | 1,363 |
| 54458 | Nelsonville | 110 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Portage County, Wisconsin (US Census).