First three digits · New Hampshire
ZIP Codes Starting with
28 ZIP codes start with 034, sorted at the Manchester, NH (SCF 030) sectional center (USPS labeling list L005, effective October 1, 2026) in New Hampshire: 25 residential ZIP codes across 2 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 034 mean?
The first digit, 0, is one of ten national areas (Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, Puerto Rico, Rhode Island, Vermont, U.S. Virgin Islands and Armed Forces Europe). The first three, 034, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 034 to the Manchester, NH (SCF 030) facility. The last two digits pick the delivery area. By residents, the largest town names among the 034 ZIP codes are Keene, Peterborough, Swanzey, Rindge, Jaffrey and Winchester.
The same facility sorts 6 prefixes, 223 ZIP codes in all: 030, 031, 032, 033, 034, 038.
Where are the 034 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 034
| County | ||||||
|---|---|---|---|---|---|---|
| 03431 | Keene | Cheshire County | 25,065 | 418 | $80k | $256k |
| 03435 | Keene | Cheshire County | PO Box or unique | – | – | – |
| 03440 | Antrim | Hillsborough County | 2,661 | 85 | $89k | $300k |
| 03441 | Ashuelot | Cheshire County | 593 | 137 | $54k | $284k |
| 03442 | Bennington | Hillsborough County | 1,588 | 139 | $84k | $267k |
| 03443 | Chesterfield | Cheshire County | 581 | 54 | – | $373k |
| 03444 | Dublin | Cheshire County | 1,666 | 60 | $105k | $430k |
| 03445 | Sullivan | Cheshire County | 687 | 35 | $107k | $237k |
| 03446 | Swanzey | Cheshire County | 6,588 | 149 | $86k | $262k |
| 03447 | Fitzwilliam | Cheshire County | 2,278 | 66 | $101k | $306k |
| 03448 | Gilsum | Cheshire County | 716 | 43 | $80k | $242k |
| 03449 | Hancock | Hillsborough County | 1,838 | 53 | $93k | $432k |
| 03450 | Harrisville | Cheshire County | 885 | 48 | $103k | $431k |
| 03451 | Hinsdale | Cheshire County | 3,997 | 195 | $69k | $201k |
| 03452 | Jaffrey | Cheshire County | 5,448 | 142 | $92k | $246k |
| 03455 | Marlborough | Cheshire County | 2,242 | 94 | $69k | $268k |
| 03456 | Marlow | Cheshire County | 855 | 33 | $111k | $325k |
| 03457 | Nelson | Cheshire County | 802 | 27 | $101k | $353k |
| 03458 | Peterborough | Hillsborough County | 6,872 | 128 | $99k | $414k |
| 03461 | Rindge | Cheshire County | 6,497 | 175 | $103k | $415k |
| 03462 | Spofford | Cheshire County | 1,726 | 89 | $115k | $396k |
| 03464 | Stoddard | Cheshire County | 902 | 20 | $94k | $325k |
| 03465 | Troy | Cheshire County | 2,005 | 115 | $89k | $267k |
| 03466 | West Chesterfield | Cheshire County | 1,315 | 85 | $83k | $344k |
| 03467 | Westmoreland | Cheshire County | 2,237 | 62 | $104k | $352k |
| 03468 | West Peterborough | Hillsborough County | PO Box or unique | – | – | – |
| 03469 | West Swanzey | Cheshire County | PO Box or unique | – | – | – |
| 03470 | Winchester | Cheshire County | 4,933 | 56 | $79k | $253k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.