16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 03820 | Dover | 33,150 |
| 03867 | Rochester | 22,886 |
| 03824 | Durham | 15,054 |
| 03878 | Somersworth | 12,145 |
| 03825 | Barrington | 9,420 |
| 03835 | Farmington | 6,800 |
| 03868 | Rochester | 5,830 |
| 03861 | Lee | 4,558 |
| 03851 | Milton | 4,286 |
| 03884 | Strafford | 4,271 |
| 03839 | Rochester | 4,150 |
| 03855 | New Durham | 2,735 |
| 03869 | Rollinsford | 2,452 |
| 03823 | Madbury | 2,121 |
| 03887 | Union | 2,007 |
| 03852 | Milton Mills | 245 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Strafford County, New Hampshire (US Census).