34 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 03103 | Manchester | 37,659 |
| 03104 | Manchester | 35,274 |
| 03102 | Manchester | 33,755 |
| 03060 | Nashua | 32,223 |
| 03062 | Nashua | 28,713 |
| 03054 | Merrimack | 27,604 |
| 03051 | Hudson | 25,476 |
| 03110 | Bedford | 23,580 |
| 03055 | Milford | 16,258 |
| 03063 | Nashua | 15,630 |
| 03064 | Nashua | 14,565 |
| 03076 | Pelham | 14,333 |
| 03045 | Goffstown | 14,013 |
| 03031 | Amherst | 11,873 |
| 03109 | Manchester | 10,118 |
| 03281 | Weare | 9,141 |
| 03049 | Hollis | 8,530 |
| 03052 | Litchfield | 8,495 |
| 03244 | Hillsborough | 8,005 |
| 03458 | Peterborough | 6,914 |
| 03070 | New Boston | 6,143 |
| 03033 | Brookline | 5,697 |
| 03071 | New Ipswich | 5,274 |
| 03086 | Wilton | 4,183 |
| 03048 | Greenville | 3,414 |
| 03101 | Manchester | 3,148 |
| 03057 | Mont Vernon | 2,630 |
| 03440 | Antrim | 2,622 |
| 03047 | Greenfield | 1,816 |
| 03449 | Hancock | 1,806 |
| 03082 | Lyndeborough | 1,676 |
| 03442 | Bennington | 1,494 |
| 03084 | Temple | 1,367 |
| 03043 | 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).