Alton Bay, NH ZIP code
The ZIP code for Alton Bay, New Hampshire is 03810. It is in Belknap County.
- Population in these ZIPs
- 2,314
- Avg. median income
- $148,300population-weighted
- Typical home value
- $678,400population-weighted
- Metro area
- Laconia, NH
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Alton Bay, NH ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 03810 | 2,314 | $148,261 | $678,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Alton Bay
- Gilford 4 mi
- Alton 6 mi
- Gilmanton Iron Works 7 mi
- Gilmanton 7 mi
- New Durham 8 mi
- Mirror Lake 9 mi
- Wolfeboro 9 mi
- Belmont 10 mi
- Laconia 10 mi
- Tilton 10 mi
- Center Barnstead 11 mi
- Union 11 mi
Frequently asked questions
What is the ZIP code for Alton Bay, NH?
The ZIP code for Alton Bay, NH is 03810.
What county is Alton Bay, New Hampshire in?
Alton Bay ZIP codes are in Belknap County.