20 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 08822 | Flemington | 32,556 |
| 08889 | Whitehouse Station | 10,193 |
| 08833 | Lebanon | 9,184 |
| 08848 | Milford | 8,134 |
| 08530 | Lambertville | 8,119 |
| 07830 | Califon | 7,379 |
| 08801 | Annandale | 7,267 |
| 08809 | Clinton | 6,703 |
| 08551 | Ringoes | 5,873 |
| 08826 | Glen Gardner | 5,459 |
| 08867 | Pittstown | 5,204 |
| 08559 | Stockton | 4,836 |
| 08825 | Frenchtown | 4,735 |
| 08802 | Asbury | 4,552 |
| 08827 | Hampton | 4,346 |
| 08829 | High Bridge | 3,580 |
| 08804 | Bloomsbury | 3,465 |
| 08887 | Three Bridges | 1,380 |
| 07979 | Pottersville | 214 |
| 08858 | Oldwick | 20 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 20 ZCTAs in Hunterdon County, New Jersey (US Census).