100 Smallest ZIP Codes in the United States by Population in Belknap County, New Hampshire
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Belknap County, New Hampshire.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 03226 | CENTER HARBOR | NH | 820 |
| 2 | 03218 | BARNSTEAD | NH | 1,535 |
| 3 | 03837 | GILMANTON IRON WORKS | NH | 1,622 |
| 4 | 03810 | ALTON BAY | NH | 2,286 |
| 5 | 03237 | GILMANTON | NH | 2,338 |
| 6 | 03256 | NEW HAMPTON | NH | 2,591 |
| 7 | 03269 | SANBORNTON | NH | 2,957 |
| 8 | 03225 | CENTER BARNSTEAD | NH | 3,406 |
| 9 | 03809 | ALTON | NH | 3,617 |
| 10 | 03253 | MEREDITH | NH | 6,701 |
| 11 | 03220 | BELMONT | NH | 7,454 |
| 12 | 03249 | GILFORD | NH | 7,725 |
| 13 | 03276 | TILTON | NH | 8,811 |
| 14 | 03246 | LACONIA | NH | 16,943 |