01432 ZIP Code — Ayer, MA
Middlesex County, Massachusetts
ZIP code 01432 is located in Ayer, Massachusetts, within Middlesex County. It covers approximately 8.52 square miles and serves a population of 8,118 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 978.
About ZIP code 01432
The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $397,500. Owner-occupancy sits near the national average at 69%.
Median household income is $99,375. The poverty rate of 7% is below the national average. 32% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 31 minutes is near the national average.
Educational attainment is near the national average, with 40% of residents holding a bachelor's degree or higher.
8,118
population
8.52
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
01432 ZIP code map
Cities in ZIP code 01432
Below are the cities the US Postal Service accepts for ZIP code 01432. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Ayer | Acceptable |
| Ayer | Preferred |
Nearby ZIP codes
01434 Devens (2.9 mi)
01471 Groton (3.4 mi)
01470 Groton (3.4 mi)
01450 Groton (3.7 mi)
01464 Shirley (4 mi)
01451 Harvard (4.5 mi)
01460 Littleton (4.6 mi)
01719 Boxborough (5.6 mi)
01886 Westford (6.7 mi)
01463 Pepperell (7.3 mi)
01718 Acton (7.7 mi)
01462 Lunenburg (7.9 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 8,118 |
| Population density | 953 / sq mi |
| State FIPS | 25 |
| County FIPS | 017 |
| Geography | |
|---|---|
| Land area | 8.52 sq mi |
| Water area | 0.49 sq mi |
| Latitude | 42.5629 |
| Longitude | -71.5688 |
| Timezone | Eastern (ET) |
| Area code | 978 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.8% | 23.8% | 31.3% |
| $50k – $100k | 30.6% | 23.1% | 25.9% |
| $100k – $200k | 34.5% | 32.1% | 28.5% |
| Over $200k | 14.1% | 20.9% | 14.3% |
Demographics & statistics
8,118
Population
953
People per sq mi
40.0
Median age
$99,375
Median household income
$54,953
Per capita income
$397,500
Median home value
$1,333
Median monthly rent
69.0%
Home ownership
7.1%
Poverty rate
5.8%
Unemployment
2,660
Housing units
39.5%
Bachelor's or higher
Age distribution
Male
Female
205
Under 5
214
190
5–9
197
148
10–14
154
226
15–19
235
315
20–24
328
518
25–34
540
596
35–44
621
284
45–54
295
480
55–59
499
377
60–64
392
408
65–74
424
147
75–84
154
84
85+
87
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 1,450 | 17.9% |
| 18 and over | 6,668 | 82.1% |
| 65 and over | 1,304 | 16.1% |
| Median age | 40.0 years | |
Race & ethnicity
White
67.7%
Hispanic or Latino
12.7%
Two or more races
11.3%
Other race
4.3%
Black or African American
2.5%
Asian
1.4%
American Indian / Alaska Native
0.1%
| Group | Count | % |
|---|---|---|
| White | 6,291 | 67.7% |
| Hispanic or Latino | 1,178 | 12.7% |
| Two or more races | 1,054 | 11.3% |
| Other race | 398 | 4.3% |
| Black or African American | 236 | 2.5% |
| Asian | 131 | 1.4% |
| American Indian / Alaska Native | 8 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.8% | 23.8% | 31.3% |
| $50k – $100k | 30.6% | 23.1% | 25.9% |
| $100k – $200k | 34.5% | 32.1% | 28.5% |
| Over $200k | 14.1% | 20.9% | 14.3% |
Under $10k
3.7%
$10k–$15k
1.0%
$15k–$25k
0.5%
$25k–$35k
9.5%
$35k–$50k
7.5%
$50k–$75k
17.4%
$75k–$100k
10.6%
$100k–$150k
20.0%
$150k–$200k
10.4%
$200k+
19.5%
| Range | % of households |
|---|---|
| Under $10k | 3.7% |
| $10k–$15k | 1.0% |
| $15k–$25k | 0.5% |
| $25k–$35k | 9.5% |
| $35k–$50k | 7.5% |
| $50k–$75k | 17.4% |
| $75k–$100k | 10.6% |
| $100k–$150k | 20.0% |
| $150k–$200k | 10.4% |
| $200k+ | 19.5% |
| Median income | $99,375 |
Housing
Home values
Under $50k
2.0%
$50k–$100k
0.8%
$100k–$150k
3.0%
$150k–$200k
6.5%
$200k–$300k
19.1%
$300k–$500k
45.6%
$500k–$1M
21.9%
$1M+
1.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $397,500 |
| Median rent / month | $1,333 |
| Owner occupied | 69.0% |
| Renter occupied | 31.0% |
| Vacant | 4.1% |
| Single-family detached | 50.9% |
| Large apartment buildings | 8.1% |
| Mobile homes | 0.8% |
| Median rooms | 5.1 |
| Avg household size (owned) | 2.27 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.2% |
| 2010–2019 | 11.1% |
| 2000–2009 | 7.7% |
| 1990–1999 | 11.7% |
| 1980–1989 | 13.1% |
| 1970–1979 | 13.8% |
| 1960–1969 | 10.1% |
| 1950–1959 | 6.5% |
| 1940–1949 | 6.0% |
| 1939 or earlier | 19.9% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.8% |
| 1 bedroom | 13.8% |
| 2 bedrooms | 36.9% |
| 3 bedrooms | 31.1% |
| 4 bedrooms | 14.3% |
| 5+ bedrooms | 1.1% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.6% |
| 1 vehicle | 40.9% |
| 2 vehicles | 39.4% |
| 3 or more | 16.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 58.0% |
| Electricity | 20.8% |
| Propane / LP gas | 2.4% |
| Fuel oil | 17.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 1,461 | 40.2% |
| Cohabiting couple | 458 | 12.6% |
| Male householder, no spouse | 567 | 15.6% |
| Female householder, no spouse | 1,144 | 31.5% |
| Households with children under 18 | 932 | 25.7% |
| Households with seniors (65+) | 1,062 | 29.3% |
| Average household size | 2.22 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 44.7% | 29.8% |
| Married | 44.7% | 41.9% |
| Separated | 3.4% | 4.6% |
| Widowed | 2.2% | 6.2% |
| Divorced | 4.9% | 17.4% |
Education
Less than 9th grade
5.4%
Some HS, no diploma
5.4%
HS graduate
19.6%
Some college, no degree
20.9%
Associate's degree
9.3%
Bachelor's degree
24.5%
Graduate / professional
15.0%
| Metric | % |
|---|---|
| HS diploma or higher | 89.3% |
| Bachelor's or higher | 39.5% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 170 | 11.1% |
| Kindergarten | 111 | 7.2% |
| Elementary school | 533 | 34.8% |
| High school | 464 | 30.3% |
| College / grad school | 254 | 16.6% |
Employment
Industry of employment
Education & healthcare
24.5%
Manufacturing
16.3%
Retail trade
12.8%
Professional & management
10.4%
Construction
6.0%
Finance & real estate
6.0%
Arts, food & hospitality
5.1%
Wholesale trade
4.7%
Public administration
3.6%
Information
3.4%
Transportation & utilities
3.1%
Other services
3.1%
Agriculture & mining
1.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 47.2% |
| Service | 10.1% |
| Sales & office | 27.6% |
| Natural resources & construction | 6.6% |
| Production & transportation | 8.5% |
Employment type
| Type | % |
|---|---|
| Private sector | 83.1% |
| Government | 13.5% |
| Self-employed | 3.4% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 77.5% |
| Carpool | 2.2% |
| Public transit | 3.5% |
| Walk | 0.3% |
| Work from home | 16.1% |
| Other means | 0.5% |
| Avg commute (minutes) | 31.4 |
Poverty
All people
7.1%
Under 18 years
5.1%
18 and over
7.6%
Married-couple families
0.6%
Female-led households
12.2%
Income support
| Source | % of households |
|---|---|
| Social Security | 31.7% |
| Retirement income | 14.3% |
| Supplemental Security | 6.8% |
| Cash public assistance | 1.2% |
| Food stamps / SNAP | 7.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 22.2% |
| High blood pressure | 25.5% |
| High cholesterol | 28.2% |
| Diabetes | 6.9% |
| Heart disease | 4.5% |
| Stroke | 2.1% |
| Asthma | 10.0% |
| Arthritis | 19.8% |
| Kidney disease | 2.2% |
| Pulmonary disease | 4.2% |
| Cancer | 6.4% |
| Behavior / access | % |
|---|---|
| Smoking | 10.6% |
| Binge drinking | 17.6% |
| No physical activity | 15.4% |
| Less than 7 hrs sleep | 28.8% |
| Depression | 18.2% |
| Fair or poor health | 8.3% |
| Poor mental health | 12.8% |
| Poor physical health | 7.1% |
| No health insurance | 5.4% |
| Visited doctor (checkup) | 75.4% |
| Visited dentist | 75.9% |
| Cholesterol screening | 91.9% |
| Teeth loss | 8.9% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 468 | 7.1% |
| Disability | % |
|---|---|
| Any disability | 14.5% |
| Under 18 | 7.2% |
| 18–64 years | 12.9% |
| 65 and over | 29.6% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 75.0% |
| Public insurance | 35.7% |
| No insurance | 3.0% |
| Uninsured under 19 | 9.4% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 7,699 | 94.8% |
| Spanish | 380 | 4.9% |
| Other Indo-European | 194 | 2.5% |
| Asian & Pacific Islander | 149 | 1.9% |
| Other languages | 9 | 0.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 7,497 | 92.4% |
| Born in same state | 7,303 | 90.0% |
| Born in different state | 5,354 | 66.0% |
| Foreign born | 194 | 2.4% |
| Naturalized citizen | 621 | 7.6% |
| Not a US citizen | 411 | 66.2% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 2,146 | 26.4% |
| French | 993 | 12.2% |
| German | 284 | 3.5% |
| Arab | 283 | 3.5% |
| Ancestry | Count | % |
|---|---|---|
| English | 55 | 0.7% |
| Polish | 41 | 0.5% |
| Norwegian | 38 | 0.5% |
| Dutch | 33 | 0.4% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 44.7% |
| Internet access | 92.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 01432
What city is ZIP code 01432 in?
ZIP code 01432 is primarily assigned to Ayer, Massachusetts.
What county is ZIP code 01432 in?
ZIP code 01432 falls within Middlesex County, Massachusetts.
What is the typical home value in ZIP code 01432?
The median home value in ZIP code 01432 is $397,500.
What is the population of ZIP code 01432?
ZIP code 01432 has an estimated population of 8,118 residents, with a density of 953 people per square mile.
What is the median household income in ZIP code 01432?
The median household income in ZIP code 01432 is $99,375, above the national median of ~$75,000.
What timezone is ZIP code 01432 in?
ZIP code 01432 observes the EST timezone.