36 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 03766 | Lebanon | 11,195 |
| 03755 | Hanover | 10,569 |
| 03264 | Plymouth | 6,885 |
| 03222 | Bristol | 6,097 |
| 03561 | Littleton | 6,040 |
| 03748 | Enfield | 4,563 |
| 03741 | Canaan | 4,131 |
| 03784 | West Lebanon | 3,804 |
| 03223 | Campton | 3,441 |
| 03285 | Thornton | 2,799 |
| 03574 | Bethlehem | 2,573 |
| 03585 | Lisbon | 2,456 |
| 03217 | Ashland | 2,183 |
| 03266 | Rumney | 2,130 |
| 03785 | Woodsville | 2,018 |
| 03245 | Holderness | 1,917 |
| 03768 | Lyme | 1,710 |
| 03251 | Lincoln | 1,461 |
| 03774 | North Haverhill | 1,420 |
| 03580 | Franconia | 1,402 |
| 03240 | Grafton | 1,354 |
| 03777 | Orford | 1,295 |
| 03241 | Hebron | 1,150 |
| 03262 | North Woodstock | 1,142 |
| 03750 | Etna | 1,116 |
| 03740 | Bath | 1,097 |
| 03780 | Pike | 1,071 |
| 03282 | Wentworth | 1,052 |
| 03279 | Warren | 878 |
| 03779 | Piermont | 868 |
| 03771 | Monroe | 786 |
| 03586 | Sugar Hill | 658 |
| 03765 | Haverhill | 513 |
| 03215 | Waterville Valley | 290 |
| 03293 | Woodstock | 72 |
| 03238 | Glencliff | 64 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 36 ZCTAs in Grafton County, New Hampshire (US Census).