PlainZIP

Alton, NH · standard

ZIP Code 03809

Belknap County, New Hampshire - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,716
35/sq mi
$106,397
Median income
$387,500
Median home value
30.9%
Bachelor's or higher

The verdict

Alton pairs an upper-quartile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 15%
household income, US ZIPs
Top 22%
home value, US ZIPs
35
people per sq mi
91%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 03809 against every reporting US ZIP.

ZIP code 03809 covers 105.6 square miles in Alton, Belknap County, New Hampshire (a standard USPS delivery area), with a modest 3,716 residents on file, a density of 35 people per square mile, in the New York time zone.

ZIP 03809 lands in the middle-income range, with a median household income of $106,397 (4% above the New Hampshire average), while per-capita income is $44,902. 5.1% of residents live below the poverty line, and the unemployment rate reads 3.1%. Housing costs here run $387,500 for a typical home value (4% below the state average), with rent averaging - a month; 90.9% of homes are owner-occupied.

A solid share of residents have a four-year degree: 30.9% of adults hold a bachelor's degree or higher, the median age is 51.1, and the average commute is 37 minutes. Beyond these figures, 7 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Belknap County, letting you compare 03809 to its immediate surroundings rather than a national baseline alone.

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 03809

Top 5 sectors by establishment count in Alton, NH

Which industries have the most business establishments in ZIP 03809.

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 03809, Alton, 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

3,716

Population

105.6

Area (sq mi)

35

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 03809?

51.1

Median Age

50.6%

Male

49.4%

Female

1.7%

Foreign-Born

White 97.1%
African American 0.9%
Asian 0.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.1%
Two or More Ethnicities 1.4%
Hispanic or Latino 1.1%

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?

$106,397

Median Household Income

+4% vs state

$44,902

Per Capita Income

5.1%

Poverty Rate

3.1%

Unemployment Rate

36.9 min

Mean Commute Time

How ZIP 03809 ranks nationally

Alton, NH household income vs. every US ZIP code

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

$106,397 Top 15% higher than 85% 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%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $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 60.4%
Bachelor's Degree or Higher 30.9%

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

What does housing look like?

1,939

Total Housing Units

1,427

Occupied Units

512

Vacant Units

2.58

Avg Household Size

Occupancy Type

Owner 90.9%
Renter 9.1%

$387,500

Median Home Value

-4% vs state

1980

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 88 business establishments in ZIP 03809, employing approximately 752 people with a combined annual payroll of $31,588,000.

88

Businesses

752

Employees

$31.6M

Annual Payroll

10

Industry Sectors

Industry Establishments % of Total
Construction 12 13.6%
Retail trade 12 13.6%
Professional, scientific, and technical services 11 12.5%
Other services (except public administration) 10 11.4%
Administrative and support and waste management and remediation services 9 10.2%
Accommodation and food services 9 10.2%
Health care and social assistance 6 6.8%
Finance and insurance 4 4.5%
Wholesale trade 3 3.4%
Real estate and rental and leasing 3 3.4%

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 03809 vs 03855 →

ZIP 03809 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 03809 ranks #2 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 03809 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 03809 ranks #5 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
03855 New Durham, NH 2,638 3.6 mi
03225 Center Barnstead, NH 3,660 6.7 mi
03810 Alton Bay, NH 1,538 6.1 mi
03837 Gilmanton Iron Works, NH 1,519 6.3 mi
03887 Union, NH 2,154 7.8 mi
03218 Barnstead, NH 960 9.1 mi
03835 Farmington, NH 6,786 9.3 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
03225 standard
Center Barnstead, NH
Pop: 3,660
03269 standard
Sanbornton, NH
Pop: 2,966

Related Areas

Belknap County Alton, NH New Hampshire

Frequently Asked Questions

What county is ZIP code 03809 in? ▼
ZIP code 03809 (Alton) 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 03809? ▼
ZIP code 03809 in Alton, NH has a population of 3,716 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 03809? ▼
The median household income in ZIP 03809 is $106,397, which is 39% above the national average of $76,288.
What is the average home value in ZIP 03809? ▼
The median home value in ZIP 03809 is $387,500, which is 39% above the national average of $278,155.
What is the demographic makeup of ZIP 03809? ▼
The largest racial group in ZIP 03809 is White at 97.1%. Hispanic or Latino residents make up 1.1% of the population.
How many businesses are in ZIP code 03809? ▼
ZIP code 03809 has 88 business establishments employing approximately 752 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 03809? ▼
The top industries by establishment count in ZIP 03809 are: Construction (12), Retail trade (12), Professional, scientific, and technical services (11). There are 10 industry sectors represented in total.
What is the education level in ZIP code 03809? ▼
In ZIP code 03809, 60.4% of residents aged 25+ have a high school diploma or higher, and 30.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 03809? ▼
The mean commute time for workers in ZIP code 03809 is 36.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 03809? ▼
In ZIP code 03809, approximately 90.9% of occupied housing units are owner-occupied and 9.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 03809? ▼
The poverty rate in ZIP code 03809 is 5.1% 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.