PlainZIP

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
$148,261
Median income
$569,200
Median home value
43.1%
Bachelor's or higher

The verdict

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 New Hampshire average), while per-capita income is $72,017. 2.5% of residents live below the poverty line, and the unemployment rate reads 1.1%. On housing, the median home value is $569,200 (41% above the state average) with median rent at - per month, and 98.5% of occupied units 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 -. To put 03810 in local context, 7 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Belknap County, for a geography-aware comparison.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 03810?

57.0

Median Age

48.2%

Male

51.8%

Female

0.6%

Foreign-Born

White 95.5%
African American 0.0%
Asian 0.3%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.1%
Hispanic or Latino 0.0%

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

$72,017

Per Capita Income

2.5%

Poverty Rate

1.1%

Unemployment Rate

How ZIP 03810 ranks nationally

Alton Bay, NH household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$148,261 Top 4% higher than 96% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 69.5%
Bachelor's Degree or Higher 43.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,675

Total Housing Units

826

Occupied Units

1,849

Vacant Units

2.80

Avg Household Size

Occupancy Type

Owner 98.5%
Renter 1.5%

$569,200

Median Home Value

+41% vs state

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.

residents

What this shows Among its immediate neighbors, ZIP 03810 ranks #6 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 03810 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
03853 Mirror Lake, NH 602 7.8 mi
03249 Gilford, NH 7,113 5.6 mi
03809 Alton, NH 3,716 6.1 mi
03837 Gilmanton Iron Works, NH 1,519 7.7 mi
03894 Wolfeboro, NH 6,314 8.0 mi
03237 Gilmanton, NH 2,254 8.4 mi
03855 New Durham, NH 2,638 8.2 mi

More ZIP Codes in Belknap County

03246 standard
Laconia, NH
Pop: 15,963
03220 standard
Belmont, NH
Pop: 7,430
03249 standard
Gilford, NH
Pop: 7,113
03253 standard
Meredith, NH
Pop: 6,219
03809 standard
Alton, NH
Pop: 3,716
03225 standard
Center Barnstead, NH
Pop: 3,660

Related Areas

Belknap County Alton Bay, NH New Hampshire

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.

Read our methodology to see how this data is sourced, computed, and verified.