34 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 3103 | Manchester | 37,093 |
| 3104 | Manchester | 34,962 |
| 3102 | Manchester | 33,759 |
| 3060 | Nashua | 31,469 |
| 3062 | Nashua | 28,866 |
| 3054 | Merrimack | 27,139 |
| 3051 | Hudson | 25,385 |
| 3110 | Bedford | 23,385 |
| 3055 | Milford | 16,151 |
| 3063 | Nashua | 15,941 |
| 3064 | Nashua | 14,667 |
| 3076 | Pelham | 14,221 |
| 3045 | Goffstown | 14,165 |
| 3031 | Amherst | 11,814 |
| 3109 | Manchester | 10,374 |
| 3281 | Weare | 9,108 |
| 3052 | Litchfield | 8,484 |
| 3049 | Hollis | 8,429 |
| 3244 | Hillsborough | 7,666 |
| 3458 | Peterborough | 6,864 |
| 3070 | New Boston | 6,099 |
| 3033 | Brookline | 5,659 |
| 3071 | New Ipswich | 5,244 |
| 3086 | Wilton | 4,116 |
| 3048 | Greenville | 3,489 |
| 3101 | Manchester | 3,228 |
| 3440 | Antrim | 2,900 |
| 3057 | Mont Vernon | 2,607 |
| 3449 | Hancock | 1,785 |
| 3047 | Greenfield | 1,784 |
| 3082 | Lyndeborough | 1,606 |
| 3442 | Bennington | 1,515 |
| 3043 | Francestown | 1,444 |
| 3084 | Temple | 1,372 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 34 ZCTAs in Hillsborough County, New Hampshire (US Census).