20 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 08822 | Flemington | 32,002 |
| 08889 | Whitehouse Station | 10,539 |
| 08833 | Lebanon | 8,772 |
| 08848 | Milford | 8,376 |
| 08530 | Lambertville | 8,146 |
| 07830 | Califon | 7,451 |
| 08801 | Annandale | 7,391 |
| 08809 | Clinton | 6,838 |
| 08551 | Ringoes | 5,950 |
| 08867 | Pittstown | 5,411 |
| 08826 | Glen Gardner | 5,255 |
| 08825 | Frenchtown | 4,639 |
| 08559 | Stockton | 4,608 |
| 08802 | Asbury | 4,604 |
| 08827 | Hampton | 4,139 |
| 08829 | High Bridge | 3,584 |
| 08804 | Bloomsbury | 3,066 |
| 08887 | Three Bridges | 1,377 |
| 07979 | Pottersville | 205 |
| 08858 | Oldwick | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 20 ZCTAs in Hunterdon County, New Jersey (US Census).