34 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 3103 | Manchester | 37,659 |
| 3104 | Manchester | 35,274 |
| 3102 | Manchester | 33,755 |
| 3060 | Nashua | 32,223 |
| 3062 | Nashua | 28,713 |
| 3054 | Merrimack | 27,604 |
| 3051 | Hudson | 25,476 |
| 3110 | Bedford | 23,580 |
| 3055 | Milford | 16,258 |
| 3063 | Nashua | 15,630 |
| 3064 | Nashua | 14,565 |
| 3076 | Pelham | 14,333 |
| 3045 | Goffstown | 14,013 |
| 3031 | Amherst | 11,873 |
| 3109 | Manchester | 10,118 |
| 3281 | Weare | 9,141 |
| 3049 | Hollis | 8,530 |
| 3052 | Litchfield | 8,495 |
| 3244 | Hillsborough | 8,005 |
| 3458 | Peterborough | 6,914 |
| 3070 | New Boston | 6,143 |
| 3033 | Brookline | 5,697 |
| 3071 | New Ipswich | 5,274 |
| 3086 | Wilton | 4,183 |
| 3048 | Greenville | 3,414 |
| 3101 | Manchester | 3,148 |
| 3057 | Mont Vernon | 2,630 |
| 3440 | Antrim | 2,622 |
| 3047 | Greenfield | 1,816 |
| 3449 | Hancock | 1,806 |
| 3082 | Lyndeborough | 1,676 |
| 3442 | Bennington | 1,494 |
| 3084 | Temple | 1,367 |
| 3043 | Francestown | 1,347 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 34 ZCTAs in Hillsborough County, New Hampshire (US Census).