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 Moderate-density area
- $106,397
- Median income Above-median income area
- $387,500
- Median home value Above-median home value
- 30.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 03809 (Alton, NH) fell -5.5% from 2023 to 2024.
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 average New Hampshire ZIP), while per-capita income is $44,902. Both reported hardship measures are comparatively low in absolute terms: poverty is 5.1% and unemployment is 3.1%. Median home value is $387,500 (4% below the average New Hampshire ZIP); 90.9% of occupied 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. The page also surfaces 7 ZIP codes within roughly 10 miles and 6 more in Belknap County, so 03809 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 03809
Top 5 sectors by establishment count in Alton, NH
Which industries have the most business establishments in ZIP 03809.
- Construction
Construction
12 establishments
- Retail trade
Retail trade
12 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
11 establishments
- Other services (except public administration)
Other services (except public administration)
10 establishments
- Administrative and support and waste management and remediation services
Administrative and support and waste management and remediation services
9 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 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
Who lives in ZIP 03809?
51.1
Median Age
50.6%
Male
49.4%
Female
1.7%
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?
$106,397
Median Household Income
+4% vs state ZIP avg
$44,902
Per Capita Income
5.1%
Poverty Rate
3.1%
Unemployment Rate
36.9 min
Mean Commute Time
How ZIP 03809 ranks among New Hampshire ZIPs
Alton, 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)
$106,397 Top 40% higher than 60% 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
1,939housing units
1,939
Total Housing Units
1,427
Occupied Units
512
Vacant Units
2.58
Avg Household Size
Occupancy Type
$387,500
Median Home Value
-4% vs state ZIP avg
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.
- 03835
Farmington (03835)
6,786 residents
- 03809
Alton (03809)
3,716 residents
- 03225
Center Barnstead (03225)
3,660 residents
- 03855 2,638
New Durham (03855)
2,638 residents
- 03887 2,154
Union (03887)
2,154 residents
- 03810 1,538
Alton Bay (03810)
1,538 residents
- 03837 1,519
Gilmanton Iron Works (03837)
1,519 residents
- 03218 960
Barnstead (03218)
960 residents
What this shows Among its immediate neighbors, ZIP 03809 ranks #2 by population - useful context the national average alone can't give.
ZIP 03809 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
- 03218
Barnstead (03218)
$112,500 median income
- 03225
Center Barnstead (03225)
$111,660 median income
- 03809
Alton (03809)
$106,397 median income
- 03855
New Durham (03855)
$100,194 median income
- 03887
Union (03887)
$91,875 median income
- 03835
Farmington (03835)
$66,982 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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 03809, 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 (3,716 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 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.
Related
Take this with you
What to do with ZIP 03809's numbers, next.
- See how ZIP 03809 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Alton, NH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.