Home > NH > Belknap County > Gilmanton > Zip 03237

Zip Code 03237 — Gilmanton, NH

03237 is a ZIP Code associated with Gilmanton, NH, located within Belknap. The postal region supports an estimated population of 2,575 residents across Data Pending housing units, with a population density of 26.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.429970, -71.382330)

Data MetricLocal Statistic
Postal / Zip Code03237
Primary CityGilmanton
State / ProvinceNH
CountyBelknap
Total Population2,575
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density26.2 people/sq mi
TimezoneAmerica/New_York

How 03237 Compares

MetricZIP 03237Belknap CountyNH State Average
Population2,57560,6151,394,951
Median IncomeData PendingN/AN/A
Population Density26.2 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 03837Gilmanton Iron Works2.8 mi1,451N/A
Zip 03220Belmont5.4 mi7,393N/A
Zip 03307Loudon8.0 mi5,724N/A
Zip 03218Barnstead8.1 mi1,160N/A
Zip 03810Alton Bay8.5 mi2,314N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →