18 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 84302 | Brigham City | 26,601 |
| 84337 | Tremonton | 14,940 |
| 84312 | Garland | 4,939 |
| 84340 | Willard | 3,301 |
| 84324 | Mantua | 1,348 |
| 84307 | Corinne | 1,235 |
| 84314 | Honeyville | 1,235 |
| 84311 | Fielding | 884 |
| 84301 | Bear River City | 779 |
| 84309 | Deweyville | 735 |
| 84336 | Snowville | 416 |
| 84330 | Plymouth | 371 |
| 84306 | Collinston | 322 |
| 84316 | Howell | 315 |
| 84331 | Portage | 226 |
| 84334 | Riverside | 178 |
| 84329 | Park Valley | 150 |
| 84313 | Grouse Creek | 39 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 18 ZCTAs in Box Elder County, Utah (US Census).