18 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 84302 | Brigham City | 26,711 |
| 84337 | Tremonton | 15,452 |
| 84312 | Garland | 5,070 |
| 84340 | Willard | 3,386 |
| 84324 | Mantua | 1,642 |
| 84307 | Corinne | 1,377 |
| 84314 | Honeyville | 1,011 |
| 84311 | Fielding | 902 |
| 84301 | Bear River City | 863 |
| 84309 | Deweyville | 791 |
| 84336 | Snowville | 520 |
| 84330 | Plymouth | 411 |
| 84306 | Collinston | 362 |
| 84316 | Howell | 323 |
| 84331 | Portage | 242 |
| 84334 | Riverside | 234 |
| 84329 | Park Valley | 99 |
| 84313 | Grouse Creek | 29 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 18 ZCTAs in Box Elder County, Utah (US Census).