13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 28540 | Jacksonville | 50,808 |
| 28546 | Jacksonville | 48,122 |
| 28547 | Camp Lejeune | 21,266 |
| 28574 | Richlands | 20,631 |
| 28539 | Hubert | 17,900 |
| 28460 | Sneads Ferry | 13,405 |
| 28445 | Holly Ridge | 9,784 |
| 28543 | Tarawa Terrace | 6,341 |
| 28555 | Maysville | 5,893 |
| 28544 | Midway Park | 4,260 |
| 28542 | Camp Lejeune | 3,559 |
| 28454 | Maple Hill | 2,851 |
| 28582 | Stella | 1,504 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Onslow County, North Carolina (US Census).