Belknap County New Hampshire is covered by a total of 20 ZIP Codes. There are 4 ZIP Codes in Belknap County that extend into adjacent counties (Carroll County, Merrimack County, and Strafford County). Of the ZIP codes within or partially within Belknap County there are 15 Standard ZIP Codes, 2 Unique ZIP Codes and 3 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Belknap County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Barnstead | Standard | |||
| Belmont | Standard | |||
| Center Barnstead | Standard | |||
| Center Harbor | Standard | |||
| Gilmanton | Standard | |||
| Laconia | Standard | |||
| Laconia | PO Box | |||
| Gilford | Standard | |||
| Lochmere | PO Box | |||
| Meredith | Standard | |||
| New Hampton | Standard | |||
| Sanbornton | Standard | |||
| Tilton | Standard | |||
| Winnisquam | PO Box | |||
| Tilton | Unique | |||
| Tilton | Unique | |||
| Alton | Standard | |||
| Alton Bay | Standard | |||
| Gilmanton Iron Works | Standard | |||
| New Durham | Standard |