| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 03218 | Barnstead | Belknap County | Standard |
| 03220 | Belmont | Belknap County | Standard |
| 03225 | Center Barnstead | Belknap County | Standard |
| 03226 | Center Harbor | Belknap County | Standard |
| 03237 | Gilmanton | Belknap County | Standard |
| 03246 | Laconia | Belknap County | Standard |
| 03247 | Laconia | Belknap County | PO Box |
| 03249 | Gilford | Belknap County | Standard |
| 03252 | Lochmere | Belknap County | PO Box |
| 03253 | Meredith | Belknap County | Standard |
| 03256 | New Hampton | Belknap County | Standard |
| 03269 | Sanbornton | Belknap County | Standard |
| 03276 | Tilton | Merrimack County | Standard |
| 03289 | Winnisquam | Belknap County | PO Box |
| 03298 | Tilton | Belknap County | Unique |
| 03299 | Tilton | Belknap County | Unique |
| 03809 | Alton | Belknap County | Standard |
| 03810 | Alton Bay | Belknap County | Standard |
| 03837 | Gilmanton Iron Works | Belknap County | Standard |
| 03855 | New Durham | Strafford County | Standard |