New Hampshire counties
Every county in New Hampshire, with the ZIP codes recorded in each. Pick one to see its full ZIP code list.
- counties
- 10
- ZIP codes
- 281
All New Hampshire counties
| County | ZIP codes | Largest city |
|---|---|---|
| Belknap County | 19 | Tilton |
| Carroll County | 31 | Bartlett |
| Cheshire County | 27 | Keene |
| Coos County | 16 | Berlin |
| Grafton County | 40 | Lebanon |
| Hillsborough County | 39 | Manchester |
| Merrimack County | 29 | Concord |
| Rockingham County | 44 | Portsmouth |
| Strafford County | 19 | Rochester |
| Sullivan County | 17 | Acworth |
Scope every county-equivalent recorded in New Hampshire. Source Census 2024 county Gazetteer (2024 Gazetteer) and GeoNames US postal codes (2026-07 postal dump). Updated . Names and boundaries follow the Census Bureau's current county-equivalent set, not the NH postal source's older names.