Belknap County New Hampshire ZIP Codes - Map and Full List

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 14 Standard ZIP Codes, 2 Unique ZIP Codes and 3 PO Box ZIP Codes.

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Belknap County New Hampshire ZIP Code Map

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.

List of ZIP Codes in Belknap County

ZIP CodeZIP Code City/TownZIP Code Type
ZIP Code 03218
BarnsteadStandard
ZIP Code 03220
BelmontStandard
ZIP Code 03225
Center BarnsteadStandard
ZIP Code 03226
Center HarborStandard
ZIP Code 03237
GilmantonStandard
ZIP Code 03246
LaconiaStandard
ZIP Code 03247
LaconiaPO Box
ZIP Code 03249
GilfordStandard
ZIP Code 03252
LochmerePO Box
ZIP Code 03253
MeredithStandard
ZIP Code 03256
New HamptonStandard
ZIP Code 03269
SanborntonStandard
ZIP Code 03276
TiltonStandard
ZIP Code 03289
WinnisquamPO Box
ZIP Code 03298
TiltonUnique
ZIP Code 03299
TiltonUnique
ZIP Code 03809
AltonStandard
ZIP Code 03810
Alton BayStandard
ZIP Code 03837
Gilmanton Iron WorksStandard
ZIP Code 03855
New DurhamStandard

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