Alton
Town in Belknap County, New Hampshire
Alton is a town in Belknap County, New Hampshire, with 5,894 residents (2020 Census). It sits at 561 ft (171 m) above sea level. The nearest town is New Durham, 4.7 miles E.
- 5,894residents (2020 Census)
- 561 ftelevation · 171 m
- 63.7 sq miland area · 165.0 km²
- 93 / sq mipopulation density
- 03809main ZIP code (3 in total)
About Alton
Alton is a town in Belknap County, New Hampshire, United States. The population was 5,894 at the 2020 census, and an estimated 6,036 in 2025, up from 5,250 at the 2010 census. It is home to Alton Bay State Forest and Mount Major State Forest.
The primary settlement in town, where 499 people resided at the 2020 census, is defined by the U.S. Census Bureau as the Alton census-designated place (CDP) and is centered on the intersection of New Hampshire Route 11 and New Hampshire Route 140. The town also includes the village of Alton Bay, a long-time resort located beside Lake Winnipesaukee.
Text: Wikipedia · CC BY-SA 4.0
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Living in Alton
- Median household income
- $113,715
- Median home value
- $430,400
- Median age
- 53.7
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Map of Alton
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Open in Google Maps ›Alton, NH population
Alton had 5,894 residents in the 2020 Census.
| 2020 Census | 5,894 |
|---|---|
| Density | 93 per sq mi (36 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Alton at a glance
| State | New Hampshire (NH) |
|---|---|
| County | Belknap County |
| Type | Town |
| Population | 5,894 (2020) |
| Land area | 63.70 sq mi (165.0 km²) |
| Water area | 19.48 sq mi (50.46 km²) |
| Elevation | 561 ft (171 m) |
| Coordinates | 43.4883° N, 71.2406° W |
| ZIP codes | 03809, 03810, 03855 |
| Official website | alton.nh.gov/Main.asp |
| Census code (GEOID) | 3300101060 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Alton
- New Durham4.7 mi E
- Gilford7.1 mi W
- Gilmanton7.4 mi SW
- Middleton8.5 mi E
- Brookfield8.9 mi NE
- Wolfeboro9.5 mi NE
- Barnstead9.6 mi S
- Union10.9 mi E
- Sanbornville11.5 mi NE
- Milton11.6 mi E
- Belmont12.1 mi W
- Farmington12.3 mi SE
Straight-line distance between town centers.
Frequently asked questions about Alton
What county is Alton in?
Alton is in Belknap County, New Hampshire.
What is the population of Alton, NH?
5,894 people lived in Alton at the 2020 Census.
What is the ZIP code of Alton, NH?
The main ZIP code is 03809. Other ZIP codes: 03810, 03855.
What is the elevation of Alton?
561 feet (171 m) above sea level.
What towns are near Alton?
New Durham (4.7 mi), Gilford (7.1 mi), Gilmanton (7.4 mi), Middleton (8.5 mi), Brookfield (8.9 mi).
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