13 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 28540 | Jacksonville | 49,141 |
| 28546 | Jacksonville | 47,256 |
| 28547 | Camp Lejeune | 21,346 |
| 28574 | Richlands | 20,990 |
| 28539 | Hubert | 18,351 |
| 28460 | Sneads Ferry | 13,532 |
| 28445 | Holly Ridge | 10,797 |
| 28543 | Tarawa Terrace | 6,069 |
| 28555 | Maysville | 5,914 |
| 28544 | Midway Park | 4,386 |
| 28542 | Camp Lejeune | 3,508 |
| 28454 | Maple Hill | 2,895 |
| 28582 | Stella | 1,658 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 13 ZCTAs in Onslow County, North Carolina (US Census).