Postal Codes

01431 ZIP Code

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ZIP code 01431 covers Ashby, Massachusetts, with a population of about 3,188 and a median household income of $110,536.

Population
3,188135 per square mile
Median age
50.211.5 points above the US average
Median household income
$110,5361.1× the Massachusetts median
Poverty rate
2.8%9.6 points below the US average
Typical home value
$491,383up 24.9% in five years
Median rent
$96943% below the Massachusetts median
Degree or higher
42.4%7.4 points above the US average
Homeownership
94.2%29.2 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
57

Where 01431 is

Ashby, Massachusetts — 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

Population3,188
Median age50.2
Family households72.9%
Born outside the US3.8%
Speaks a language other than English at home4.1%
White (non-Hispanic)94.2%
Black (non-Hispanic)0%
Asian (non-Hispanic)0.4%
Hispanic or Latino3.5%
Veterans4.4%
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$110,536
Income per person$55,297
Poverty rate2.8%
Households on SNAP or cash assistance2.8%

Household income distribution

Under $10k0.0%
$10–15k2.3%
$15–20k2.8%
$20–25k0.8%
$25–30k0.0%
$30–35k4.9%
$35–40k0.8%
$40–45k2.1%
$45–50k2.6%
$50–60k4.6%
$60–75k8.9%
$75–100k9.0%
$100–125k24.1%
$125–150k7.2%
$150–200k11.6%
$200k or more18.4%

Income as declared to the IRS

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

Tax returns filed1,640
Mean adjusted gross income$86,472
Returns declaring $200,000 or more5.5%
Returns, under $25k23.2%
Returns, $25k–$50k16.5%
Returns, $50k–$75k15.9%
Returns, $75k–$100k13.4%
Returns, $100k–$200k25.6%
Returns, $200k or more5.5%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$362,200
Median gross rent$969
Rent as a share of household income23.1%
Owner-occupied94.2%
Vacant homes3.4%
Median year built1971

What the homes are

Detached house96.4%
Attached house2.3%
2 to 4 units0.6%
Mobile home0.4%
Boat, RV or van0.3%
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$491,383as of 2026-07
Typical home value, 1 yearup 2.3%
Typical home value, 5 yearsup 24.9%
Typical home value, 10 yearsup 86.3%
Typical home value since 2000
200020132026$491,383$168,302

$168,302 in 2000 to $491,383 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.7%
Bachelor's degree or higher42.4%
High school diploma or higher93.3%
Works from home16.5%
Drives to work alone71.5%
Takes public transport0.3%
Commutes 45 minutes or more34.9%
Health

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

Obesity26.2% 7.2 pts below the national average of 33.4%
Diagnosed diabetes8.9% 3.1 pts below the national average of 12%
Currently smokes11.5% 1.7 pts below the national average of 13.2%
High blood pressure30.2% 3.9 pts below the national average of 34.1%
Fair or poor general health14.6% 5.7 pts below the national average of 20.3%
No health insurance (18–64)3.6% 7.7 pts below the national average of 11.3%
Depression26.5% 4.6 pts above the national average of 21.9%
No leisure-time physical activity18.7% 6.7 pts below the national average of 25.4%
Arthritis27.1% 2 pts above the national average of 25.1%
Binge drinking17.6% 1.6 pts above the national average of 16%
Taking blood pressure medication74.4% same as the national average of 74.7%
Cancer (non-skin)9.5% 1.8 pts above the national average of 7.7%
Current asthma12.2% 1.8 pts above the national average of 10.4%
Coronary heart disease5.6% 0.6 pts below the national average of 6.2%
Routine check-up in past year80.4% 3.7 pts above the national average of 76.7%
Cholesterol screening91.3% 5.4 pts above the national average of 85.9%
Cognitive disability13.4% 1.4 pts below the national average of 14.8%
Colorectal screening75.7% 11.4 pts above the national average of 64.3%
COPD5.9% 0.7 pts below the national average of 6.6%
Visited a dentist76.9% 15.6 pts above the national average of 61.3%
Any disability26.2% 4.5 pts below the national average of 30.7%
Lacks emotional support20.7% 4.1 pts below the national average of 24.8%
Food insecurity8.8% 8.3 pts below the national average of 17.1%
Received food stamps10.6% 3.7 pts below the national average of 14.3%
Hearing disability5.8% 0.9 pts below the national average of 6.7%
High cholesterol37.3% 1.1 pts above the national average of 36.2%
Housing insecurity8.6% 5.2 pts below the national average of 13.8%
Independent living disability6.9% 1.5 pts below the national average of 8.4%
Lacks transport6.2% 3 pts below the national average of 9.2%
Loneliness33.4% 1 pts below the national average of 34.4%
Mammography use82.6% 6.7 pts above the national average of 75.9%
Poor mental health (14+ days)16.1% 0.7 pts below the national average of 16.8%
Mobility disability10.9% 3.1 pts below the national average of 14%
Poor physical health (14+ days)11.7% 1.8 pts below the national average of 13.5%
Self-care disability2.8% 1.2 pts below the national average of 4%
Utility shut-off threat5.3% 3.5 pts below the national average of 8.8%
Sleeps under 7 hours30.2% 6.2 pts below the national average of 36.4%
Stroke2.9% 0.5 pts below the national average of 3.4%
All natural teeth lost9.4% 3.6 pts below the national average of 13%
Vision disability3.4% 2.2 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments57
People employed212
Annual payroll$13,540,000
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 2.1% of US census tracts
FEMA ratingVery Low
Expected annual loss3.2 out of 100
Community resilience83.7 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.

Landslide82.9Relatively Low at its worst in this ZIP code
Drought75.9Very Low at its worst in this ZIP code
Ice storm71.3Relatively Moderate at its worst in this ZIP code
Wildfire60.5Very Low at its worst in this ZIP code
Hurricane58.1Relatively Low at its worst in this ZIP code
Cold wave32.5Relatively Low at its worst in this ZIP code
Earthquake30Very Low at its worst in this ZIP code
Tornado27.8Very Low at its worst in this ZIP code
Strong wind27.7Relatively Low at its worst in this ZIP code
Lightning24.3Relatively Low at its worst in this ZIP code
Winter weather20Relatively Low at its worst in this ZIP code
Heat wave14.6Very Low at its worst in this ZIP code
River flooding6Very Low at its worst in this ZIP code
Hail3.9Very Low at its worst in this ZIP code
Compared with Massachusetts 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 ZIPMassachusettsUnited States
Median household income$110,536$101,341$78,538
Income per person$55,297$56,284$43,289
Poverty rate2.8%10%12.4%
Median home value$362,200$525,800$303,400
Median gross rent$969$1,687$1,348
Homeownership94.2%62.6%65%
Bachelor's degree or higher42.4%46.6%35%
Unemployment rate3.7%5.1%5.2%
Works from home16.5%16.7%13.5%
Born outside the US3.8%17.7%13.9%
Median age50.24038.7
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 stationFITCHBURG COOP, MA US6.6 km away
Rain in a year50 in

Average high and low by month

January33.5°F / 14.6°F3.52 in rain
February35.1°F / 14.3°F3.3 in rain
March43.8°F / 23.2°F4.35 in rain
April57.1°F / 34.6°F4.19 in rain
May67.1°F / 46.1°F3.7 in rain
June75.8°F / 55.3°F4.27 in rain
July80.6°F / 60.9°F3.69 in rain
August78.9°F / 59.1°F4.28 in rain
September73.2°F / 51.4°F4.25 in rain
October59.9°F / 38.8°F5.31 in rain
November47.7°F / 30.7°F3.88 in rain
December37.4°F / 21.5°F4.86 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%.

North Middlesex 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 vulnerability1more vulnerable than 1% of US census tracts
Socioeconomic status20more vulnerable than 20% of US census tracts
Household characteristics3more vulnerable than 3% of US census tracts
Racial and ethnic minority status5more vulnerable than 5% of US census tracts
Housing type and transport2more vulnerable than 2% of US census tracts
Walkability4.8 out of 20Least walkable
Nearby ZIP codes

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

01474 West Townsend, MA5.4 km away
01430 Ashburnham, MA9.4 km away
03048 Greenville, NH9.4 km away
03071 New Ipswich, NH9.6 km away
01420 Fitchburg, MA10.6 km away
01469 Townsend, MA10.7 km away
01462 Lunenburg, MA12.1 km away
03033 Brookline, NH14.2 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.

Middlesex County100% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area23.66 sq mi
Water area0.39 sq mi
Population density135 people per sq mi
Latitude, longitude42.6745, -71.8174

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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