Postal Codes

03851 ZIP Code

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ZIP code 03851 covers Milton, New Hampshire, with a population of about 4,286 and a median household income of $98,750.

Population
4,286163 per square mile
Median age
45.66.9 points above the US average
Median household income
$98,750about the New Hampshire median
Poverty rate
7.3%5.1 points below the US average
Typical home value
$470,403up 47.8% in five years
Median rent
$1,5031.1× the New Hampshire median
Degree or higher
17.3%17.7 points below the US average
Homeownership
83.5%18.5 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
51

Where 03851 is

Milton, New Hampshire — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population4,286
Median age45.6
Family households66.1%
Born outside the US2.4%
Speaks a language other than English at home0.9%
White (non-Hispanic)95.2%
Black (non-Hispanic)0%
Asian (non-Hispanic)1.3%
Hispanic or Latino0.9%
Veterans10.4%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$98,750
Income per person$39,986
Poverty rate7.3%
Households on SNAP or cash assistance4.8%

Household income distribution

Under $10k2.8%
$10–15k0.6%
$15–20k2.5%
$20–25k1.3%
$25–30k2.6%
$30–35k2.6%
$35–40k2.0%
$40–45k5.6%
$45–50k1.1%
$50–60k9.9%
$60–75k12.7%
$75–100k6.5%
$100–125k10.2%
$125–150k14.1%
$150–200k18.7%
$200k or more6.8%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed2,140
Mean adjusted gross income$75,081
Returns declaring $200,000 or more4.2%
Returns, under $25k22.4%
Returns, $25k–$50k23.8%
Returns, $50k–$75k18.7%
Returns, $75k–$100k11.7%
Returns, $100k–$200k19.2%
Returns, $200k or more4.2%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$282,500
Median gross rent$1,503
Rent as a share of household income28.7%
Owner-occupied83.5%
Vacant homes12.4%
Median year built1981

What the homes are

Detached house77.5%
Attached house4.6%
2 to 4 units6.3%
5 to 19 units2.3%
Mobile home9.4%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$470,403as of 2026-07
Typical home value, 1 yearup 8.5%
Typical home value, 5 yearsup 47.8%
Typical home value, 10 yearsup 142.1%
Typical home value since 2000
200020132026$470,403$100,455

$100,455 in 2000 to $470,403 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.5%
Bachelor's degree or higher17.3%
High school diploma or higher90.8%
Works from home19.4%
Drives to work alone70.2%
Takes public transport0%
Commutes 45 minutes or more22.4%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity35.7% 2.3 pts above the national average of 33.4%
Diagnosed diabetes10.6% 1.4 pts below the national average of 12%
Currently smokes14.2% 1 pts above the national average of 13.2%
High blood pressure36% 1.9 pts above the national average of 34.1%
Fair or poor general health17.4% 2.9 pts below the national average of 20.3%
No health insurance (18–64)7.7% 3.6 pts below the national average of 11.3%
Depression26.4% 4.5 pts above the national average of 21.9%
No leisure-time physical activity23.1% 2.3 pts below the national average of 25.4%
Arthritis30.7% 5.6 pts above the national average of 25.1%
Binge drinking15.6% same as the national average of 16%
Taking blood pressure medication75.2% 0.5 pts above the national average of 74.7%
Cancer (non-skin)9.4% 1.7 pts above the national average of 7.7%
Current asthma11.2% 0.8 pts above the national average of 10.4%
Coronary heart disease6.5% same as the national average of 6.2%
Routine check-up in past year77.7% 1 pts above the national average of 76.7%
Cholesterol screening87% 1.1 pts above the national average of 85.9%
Cognitive disability13.7% 1.1 pts below the national average of 14.8%
Colorectal screening67.1% 2.8 pts above the national average of 64.3%
COPD7.9% 1.3 pts above the national average of 6.6%
Visited a dentist65.8% 4.5 pts above the national average of 61.3%
Any disability29.4% 1.3 pts below the national average of 30.7%
Lacks emotional support24.6% same as the national average of 24.8%
Food insecurity12.1% 5 pts below the national average of 17.1%
Received food stamps8.9% 5.4 pts below the national average of 14.3%
Hearing disability7.9% 1.2 pts above the national average of 6.7%
High cholesterol38.3% 2.1 pts above the national average of 36.2%
Housing insecurity10% 3.8 pts below the national average of 13.8%
Independent living disability7.7% 0.7 pts below the national average of 8.4%
Lacks transport6.7% 2.5 pts below the national average of 9.2%
Loneliness34.4% same as the national average of 34.4%
Mammography use76.8% 0.9 pts above the national average of 75.9%
Poor mental health (14+ days)18% 1.2 pts above the national average of 16.8%
Mobility disability13% 1 pts below the national average of 14%
Poor physical health (14+ days)13.4% same as the national average of 13.5%
Self-care disability3.6% same as the national average of 4%
Utility shut-off threat6.6% 2.2 pts below the national average of 8.8%
Sleeps under 7 hours30.9% 5.5 pts below the national average of 36.4%
Stroke3.5% same as the national average of 3.4%
All natural teeth lost16.5% 3.5 pts above the national average of 13%
Vision disability4.5% 1.1 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments51
People employed570
Annual payroll$30,706,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 21% of US census tracts
FEMA ratingRelatively Low
Expected annual loss30.4 out of 100
Community resilience64.5 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Ice storm87.9Relatively Moderate at its worst in this ZIP code
Landslide85.9Relatively Low at its worst in this ZIP code
Lightning68.1Relatively Moderate at its worst in this ZIP code
Hurricane65.5Relatively Low at its worst in this ZIP code
Wildfire62.7Very Low at its worst in this ZIP code
Strong wind47.5Relatively Low at its worst in this ZIP code
River flooding47.4Relatively Low at its worst in this ZIP code
Winter weather45Relatively Low at its worst in this ZIP code
Earthquake40.5Very Low at its worst in this ZIP code
Tornado38.2Relatively Low at its worst in this ZIP code
Cold wave33.7Relatively Low at its worst in this ZIP code
Hail32.5Very Low at its worst in this ZIP code
Heat wave16.6Very Low at its worst in this ZIP code
Compared with New Hampshire and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPNew HampshireUnited States
Median household income$98,750$95,628$78,538
Income per person$39,986$50,867$43,289
Poverty rate7.3%7.2%12.4%
Median home value$282,500$367,200$303,400
Median gross rent$1,503$1,423$1,348
Homeownership83.5%72.5%65%
Bachelor's degree or higher17.3%39.8%35%
Unemployment rate3.5%3.4%5.2%
Works from home19.4%15.1%13.5%
Born outside the US2.4%6.2%13.9%
Median age45.643.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationROCHESTER SKYHAVEN AP, NH US17.6 km away
Rain in a year41 in

Average high and low by month

January32.6°F / 15.4°F2.53 in rain
February35.4°F / 17°F2.22 in rain
March43.5°F / 24.7°F3.72 in rain
April56.7°F / 34.7°F3.67 in rain
May67.4°F / 44.8°F3.52 in rain
June77°F / 54.2°F3.86 in rain
July81.9°F / 59.6°F3.52 in rain
August80.6°F / 57.9°F3.17 in rain
September72.6°F / 50.3°F3.43 in rain
October60.3°F / 39.4°F4.39 in rain
November48°F / 30.7°F3.89 in rain
December37.4°F / 21.9°F3.3 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Milton School District100% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability36more vulnerable than 36% of US census tracts
Socioeconomic status51more vulnerable than 51% of US census tracts
Household characteristics11more vulnerable than 11% of US census tracts
Racial and ethnic minority status3more vulnerable than 3% of US census tracts
Housing type and transport61more vulnerable than 61% of US census tracts
Walkability4.6 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

03835 Farmington, NH5.8 km away
03887 Union, NH8.2 km away
04027 Lebanon, ME8.8 km away
03852 Milton Mills, NH9.5 km away
03855 New Durham, NH10.7 km away
03868 Rochester, NH12.8 km away
03866 Rochester, NH13.5 km away
03867 Rochester, NH13.5 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Strafford County100% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area26.31 sq mi
Water area0.61 sq mi
Population density163 people per sq mi
Latitude, longitude43.4229, -71.0114

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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