| Zip Code | City | Population ↓ |
|---|---|---|
| 28054 | Gastonia | 40,345 |
| 28052 | Gastonia | 35,894 |
| 28056 | Gastonia | 35,493 |
| 28012 | Belmont | 26,027 |
| 28120 | Mount Holly | 23,418 |
| 28034 | Dallas | 19,063 |
| 28164 | Stanley | 15,678 |
| 28021 | Cherryville | 13,702 |
| 28016 | Bessemer City | 13,234 |
| 28098 | Lowell | 3,573 |
| 28032 | Cramerton | 2,925 |
| 28006 | Alexis | 1,206 |
| 28101 | McAdenville | 1,048 |
| 28077 | High Shoals | 389 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 14 ZCTAs in Gaston County, North Carolina (US Census).