25 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 03431 | Keene | 25,065 |
| 03446 | Swanzey | 6,588 |
| 03461 | Rindge | 6,497 |
| 03452 | Jaffrey | 5,448 |
| 03470 | Winchester | 4,933 |
| 03451 | Hinsdale | 3,997 |
| 03608 | Walpole | 3,167 |
| 03602 | Alstead | 2,381 |
| 03447 | Fitzwilliam | 2,278 |
| 03455 | Marlborough | 2,242 |
| 03467 | Westmoreland | 2,237 |
| 03465 | Troy | 2,005 |
| 03462 | Spofford | 1,726 |
| 03444 | Dublin | 1,666 |
| 03466 | West Chesterfield | 1,315 |
| 03464 | Stoddard | 902 |
| 03450 | Harrisville | 885 |
| 03456 | Marlow | 855 |
| 03457 | Nelson | 802 |
| 03448 | Gilsum | 716 |
| 03445 | Sullivan | 687 |
| 03441 | Ashuelot | 593 |
| 03443 | Chesterfield | 581 |
| 03609 | North Walpole | 523 |
| 03604 | Drewsville | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 25 ZCTAs in Cheshire County, New Hampshire (US Census).