Ayer ZIP Codes — Middlesex County, MA

There is one unique ZIP code in Ayer, Massachusetts and it is 01432. Area code: 978.

ZIP codes

8.52

sq mi land

0.49

sq mi water

978

area code

Ayer, MA ZIP code map

About Ayer, MA

Ayer, Massachusetts is a charming small town located in Middlesex County. Known for its picturesque landscapes and vibrant community, Ayer has a unique blend of historical significance and modern living. With a single ZIP code of 01432, this town reflects the quintessential New England spirit.

Location & geography

Ayer is situated in east-central Massachusetts, approximately 24 miles northwest of Boston. It is bordered by other communities including Groton to the northwest, Shirley to the east, and Littleton to the south. The town covers a total land area of 8.52 square miles with an additional 0.49 square miles of water, providing residents with diverse natural landscapes and recreational opportunities.

Community & economy

The community in Ayer is known for its friendly atmosphere and active engagement among residents. Predominantly a residential area, Ayer has seen growth in various sectors, including small businesses and light industries. Daily life in Ayer includes local events, recreational activities, and a strong sense of belonging among its residents.

Transportation

Ayer is accessible via major highways such as Route 2, which connects the town to larger urban centers. The nearest airport is Nashua Airport, located approximately 15 miles away, while Boston Logan International Airport is about 30 miles from Ayer. Public transportation is available through the MBTA, providing rail services to Boston and surrounding areas.

History

Ayer was incorporated in 1871 and originally centered around the railroad industry, which played a significant role in its development. The town's history is intertwined with the renowned Fort Devens, a former military base that has shaped its economic landscape. Over the years, Ayer has transitioned from its industrial roots to a more residential community, with ongoing development that reflects its evolving character.

Did you know?

Ayer is home to the historic Ayer Town Hall, which showcases beautiful architecture and serves as a hub for community events. A lesser-known fact is that Ayer was once the site of a significant Native American settlement before European colonization.

ZIP codes for Ayer, MA (1)

ZIP code	City	County	Map
01432	Ayer	Middlesex	View map

Demographics & statistics

8,118

Population

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

85+

← 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

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%
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	%
High blood pressure	25.5%
High cholesterol	28.2%
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	%
Binge drinking	17.6%
No physical activity	15.4%
Less than 7 hrs sleep	28.8%
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%
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

What ZIP codes does Ayer, MA have?

Ayer, MA has one ZIP code: 01432. Each ZIP code serves a distinct delivery area within the city and surrounding region.