36 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 03038 | Derry | 34,474 |
| 03079 | Salem | 30,964 |
| 03053 | Londonderry | 26,327 |
| 03801 | Portsmouth | 23,484 |
| 03833 | Exeter | 22,817 |
| 03842 | Hampton | 16,324 |
| 03087 | Windham | 16,038 |
| 03077 | Raymond | 10,900 |
| 03857 | Newmarket | 9,463 |
| 03874 | Seabrook | 8,487 |
| 03865 | Plaistow | 7,861 |
| 03885 | Stratham | 7,754 |
| 03042 | Epping | 7,430 |
| 03811 | Atkinson | 7,267 |
| 03873 | Sandown | 6,628 |
| 03841 | Hampstead | 6,508 |
| 03848 | Kingston | 6,275 |
| 03032 | Auburn | 6,119 |
| 03290 | Nottingham | 5,357 |
| 03036 | Chester | 5,300 |
| 03870 | Rye | 5,188 |
| 03858 | Newton | 4,836 |
| 03044 | Fremont | 4,831 |
| 03037 | Deerfield | 4,714 |
| 03261 | Northwood | 4,688 |
| 03862 | North Hampton | 4,610 |
| 03819 | Danville | 4,471 |
| 03034 | Candia | 4,352 |
| 03840 | Greenland | 4,106 |
| 03827 | East Kingston | 3,279 |
| 03826 | East Hampstead | 2,654 |
| 03844 | Hampton Falls | 2,370 |
| 03856 | Newfields | 2,023 |
| 03854 | New Castle | 827 |
| 03871 | Rye Beach | 356 |
| 03291 | West Nottingham | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 36 ZCTAs in Rockingham County, New Hampshire (US Census).