Alton Bay, NH · standard
ZIP Code 03810
Belknap County, New Hampshire - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,538
- 26/sq mi Moderate-density area
- $148,261
- Median income Above-median income area
- $569,200
- Median home value Above-median home value
- 43.1%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Alton Bay pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 4%
- household income, US ZIPs
- Top 10%
- home value, US ZIPs
- 26
- people per sq mi
- 99%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 03810 against every reporting US ZIP.
ZIP code 03810 covers 60.3 square miles in Alton Bay, Belknap County, New Hampshire (a standard USPS delivery area), with a modest 1,538 residents on file, a density of 26 people per square mile, in the New York time zone.
ZIP 03810 skews affluent, with a median household income of $148,261 (45% above the average New Hampshire ZIP), while per-capita income is $72,017. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.5% and unemployment is 1.1%. Housing is both higher-cost and owner-heavy: median home value is $569,200 (41% above the average New Hampshire ZIP), while 98.5% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 43.1% of adults hold a bachelor's degree or higher, the median age is 57, and the average commute is -. The page also surfaces 7 ZIP codes within roughly 10 miles and 6 more in Belknap County, so 03810 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 03810
Top 5 sectors by establishment count in Alton Bay, NH
Which industries have the most business establishments in ZIP 03810.
- Accommodation and food services
Accommodation and food services
13 establishments
- Construction
Construction
8 establishments
- Arts, entertainment, and recreation 5
Arts, entertainment, and recreation
5 establishments
- Retail trade 3
Retail trade
3 establishments
- Real estate and rental and leasing 3
Real estate and rental and leasing
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 03810, Alton Bay, NH · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,538
Population
60.3
Area (sq mi)
26
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 03810?
57.0
Median Age
48.2%
Male
51.8%
Female
0.6%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$148,261
Median Household Income
+45% vs state ZIP avg
$72,017
Per Capita Income
2.5%
Poverty Rate
1.1%
Unemployment Rate
How ZIP 03810 ranks among New Hampshire ZIPs
Alton Bay, NH household income vs. every New Hampshire ZIP code
Median household income among 236 reporting New Hampshire ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$148,261 Top 10% higher than 90% of 236 New Hampshire ZIPs
Each bar is a $20K-wide band; taller bars hold more New Hampshire ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
2,675housing units
2,675
Total Housing Units
826
Occupied Units
1,849
Vacant Units
2.80
Avg Household Size
Occupancy Type
$569,200
Median Home Value
+41% vs state ZIP avg
1972
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 42 business establishments in ZIP 03810, employing approximately 506 people with a combined annual payroll of $23,242,000.
42
Businesses
506
Employees
$23.2M
Annual Payroll
5
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 13 | 30.9% |
| Construction | 8 | 19.1% |
| Arts, entertainment, and recreation | 5 | 11.9% |
| Retail trade | 3 | 7.1% |
| Real estate and rental and leasing | 3 | 7.1% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 03810 vs 03853 →
ZIP 03810 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 03249
Gilford (03249)
7,113 residents
- 03894
Wolfeboro (03894)
6,314 residents
- 03809
Alton (03809)
3,716 residents
- 03855 2,638
New Durham (03855)
2,638 residents
- 03237 2,254
Gilmanton (03237)
2,254 residents
- 03810 1,538
Alton Bay (03810)
1,538 residents
- 03837 1,519
Gilmanton Iron Works (03837)
1,519 residents
- 03853 602
Mirror Lake (03853)
602 residents
What this shows Among its immediate neighbors, ZIP 03810 ranks #6 by population - useful context the national average alone can't give.
ZIP 03810 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 03810
Alton Bay (03810)
$148,261 median income
- 03837
Gilmanton Iron Works (03837)
$119,712 median income
- 03249
Gilford (03249)
$116,635 median income
- 03237
Gilmanton (03237)
$111,359 median income
- 03809
Alton (03809)
$106,397 median income
- 03853
Mirror Lake (03853)
$103,900 median income
- 03855
New Durham (03855)
$100,194 median income
- 03894
Wolfeboro (03894)
$94,349 median income
What this shows By household income, ZIP 03810 ranks the highest of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 03810, both outside NH so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,538 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Belknap County
Related Areas
Frequently Asked Questions
What county is ZIP code 03810 in?
ZIP code 03810 (Alton Bay) is located in Belknap County, New Hampshire. Belknap County contains multiple ZIP codes, see the full list at /counties/belknap-nh.
What is the population of ZIP code 03810?
ZIP code 03810 in Alton Bay, NH has a population of 1,538 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 03810?
The median household income in ZIP 03810 is $148,261, which is 94% above the national average of $76,288.
What is the average home value in ZIP 03810?
The median home value in ZIP 03810 is $569,200, which is 105% above the national average of $278,155.
What is the demographic makeup of ZIP 03810?
The largest racial group in ZIP 03810 is White at 95.5%.
How many businesses are in ZIP code 03810?
ZIP code 03810 has 42 business establishments employing approximately 506 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 03810?
The top industries by establishment count in ZIP 03810 are: Accommodation and food services (13), Construction (8), Arts, entertainment, and recreation (5). There are 5 industry sectors represented in total.
What is the education level in ZIP code 03810?
In ZIP code 03810, 69.5% of residents aged 25+ have a high school diploma or higher, and 43.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 03810?
In ZIP code 03810, approximately 98.5% of occupied housing units are owner-occupied and 1.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 03810?
The poverty rate in ZIP code 03810 is 2.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 03810's numbers, next.
- See how ZIP 03810 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Alton Bay, NH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.