| Zip Code | City | Population ↓ |
|---|---|---|
| 44240 | Kent | 38,208 |
| 44266 | Ravenna | 32,530 |
| 44202 | Aurora | 22,106 |
| 44241 | Streetsboro | 18,161 |
| 44260 | Mogadore | 13,037 |
| 44231 | Garrettsville | 8,831 |
| 44255 | Mantua | 6,959 |
| 44201 | Atwater | 6,956 |
| 44272 | Rootstown | 5,468 |
| 44243 | Kent | 4,996 |
| 44234 | Hiram | 3,838 |
| 44288 | Windham | 3,263 |
| 44412 | Diamond | 2,866 |
| 44411 | Deerfield | 2,119 |
| 44285 | Wayland | 92 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Portage County, Ohio (US Census).