Home > NH > Belknap County > Alton Bay > Zip 03810

Zip Code 03810 — Alton Bay, NH

03810 is a ZIP Code associated with Alton Bay, NH, located within Belknap. The postal region supports an estimated population of 2,314 residents across Data Pending housing units, with a population density of 37.9 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.526920, -71.279410)

Data Metric	Local Statistic
Postal / Zip Code	03810
Primary City	Alton Bay
State / Province	NH
County	Belknap
Total Population	2,314
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	37.9 people/sq mi
Timezone	America/New_York

How 03810 Compares

Metric	ZIP 03810	Belknap County	NH State Average
Population	2,314	60,615	1,394,951
Median Income	Data Pending	N/A	N/A
Population Density	37.9 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 03249	Gilford	5.7 mi	7,830	N/A
Zip 03809	Alton	6.1 mi	3,680	N/A
Zip 03837	Gilmanton Iron Works	7.6 mi	1,451	N/A
Zip 03853	Mirror Lake	7.7 mi	656	N/A
Zip 03894	Wolfeboro	7.7 mi	6,554	N/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 →