13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 28540 | Jacksonville | 50,207 |
| 28546 | Jacksonville | 47,841 |
| 28574 | Richlands | 19,987 |
| 28547 | Camp Lejeune | 19,509 |
| 28539 | Hubert | 18,258 |
| 28460 | Sneads Ferry | 11,666 |
| 28445 | Holly Ridge | 9,675 |
| 28543 | Tarawa Terrace | 6,841 |
| 28555 | Maysville | 5,349 |
| 28544 | Midway Park | 5,179 |
| 28542 | Camp Lejeune | 3,348 |
| 28454 | Maple Hill | 2,769 |
| 28582 | Stella | 1,750 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Onslow County, North Carolina (US Census).