PlainZIP

Ayer, MA · standard

ZIP Code 01432

Middlesex County, Massachusetts - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

7,089
323/sq mi
$101,966
Median income
$463,800
Median home value
41.9%
Bachelor's or higher

The verdict

Ayer pairs an upper-quartile household income with upper-quartile home values, in a low-density, homeowner-dominated area.

Top 18%
household income, US ZIPs
Top 15%
home value, US ZIPs
323
people per sq mi
70%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 01432 against every reporting US ZIP.

ZIP code 01432 is a mid-sized community (a standard USPS delivery area) in Ayer, Middlesex County, Massachusetts, home to 7,089 residents across 21.9 square miles, a density of 323 people per square mile, in the New York time zone.

ZIP 01432 lands in the middle-income range, with a median household income of $101,966 (12% below the Massachusetts average), while per-capita income is $58,087. The poverty rate stands at 10.7% and the unemployment rate at 7.1%. On housing, the median home value is $463,800 (23% below the state average) with median rent at $1,442 per month, and 69.5% of occupied units are owner-occupied.

A solid share of residents have a four-year degree: 41.9% of adults hold a bachelor's degree or higher, the median age is 39, and the average commute is 33 minutes. To put 01432 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Middlesex County, for a geography-aware comparison.

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 01432

Top 5 sectors by establishment count in Ayer, MA

Which industries have the most business establishments in ZIP 01432.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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 01432, Ayer, MA · 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

7,089

Population

21.9

Area (sq mi)

323

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 01432?

39.0

Median Age

49.6%

Male

50.4%

Female

10.2%

Foreign-Born

White 70.7%
African American 6.4%
Asian 6.0%
American Indian or Alaska Native 1.7%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.1%
Hispanic or Latino 15.1%

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?

$101,966

Median Household Income

-12% vs state

$58,087

Per Capita Income

10.7%

Poverty Rate

7.1%

Unemployment Rate

32.8 min

Mean Commute Time

How ZIP 01432 ranks nationally

Ayer, MA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$101,966 Top 18% higher than 82% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 61.7%
Bachelor's Degree or Higher 41.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

3,804

Total Housing Units

3,567

Occupied Units

237

Vacant Units

2.31

Avg Household Size

Occupancy Type

Owner 69.5%
Renter 30.5%

$463,800

Median Home Value

-23% vs state

$1,442

Median Rent

1977

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.9%

YoY Change (2024)

253

HPI Index (2000 = 100)

+153%

Total Change Since 2000

Home values in ZIP 01432 have increased 7.9% over the past year (2024). Since 2000, this ZIP has seen +153% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.5% 166
2021 +13.4% 188
2022 +14.6% 215
2023 +8.7% 234
2024 +7.9% 253

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 216 business establishments in ZIP 01432, employing approximately 4,132 people with a combined annual payroll of $312,021,000.

216

Businesses

4,132

Employees

$312.0M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Retail trade 29 13.4%
Construction 23 10.7%
Professional, scientific, and technical services 22 10.2%
Manufacturing 21 9.7%
Other services (except public administration) 21 9.7%
Accommodation and food services 19 8.8%
Health care and social assistance 16 7.4%
Transportation and warehousing 15 6.9%
Administrative and support and waste management and remediation services 14 6.5%
Wholesale trade 11 5.1%
Real estate and rental and leasing 8 3.7%
Finance and insurance 6 2.8%
Information 4 1.9%
Educational services 3 1.4%
Arts, entertainment, and recreation 3 1.4%

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 01432 vs 01450 →

ZIP 01432 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 01432 ranks #6 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 01432 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 01432 ranks #null of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
01450 Groton, MA 10,646 3.4 mi
01451 Harvard, MA 4,747 4.4 mi
01434 Devens, MA 1,795 2.7 mi
01464 Shirley, MA 7,211 4.0 mi
01460 Littleton, MA 8,924 4.7 mi
01467 Still River, MA 316 5.8 mi
01719 Boxborough, MA 4,996 5.9 mi
01463 Pepperell, MA 11,497 7.6 mi
01886 Westford, MA 21,951 6.8 mi
01740 Bolton, MA 4,897 9.1 mi

More ZIP Codes in Middlesex County

02148 standard
Malden, MA
Pop: 59,503
02155 standard
Medford, MA
Pop: 57,964
02149 standard
Everett, MA
Pop: 41,550
01801 standard
Woburn, MA
Pop: 38,903
01752 standard
Marlborough, MA
Pop: 38,499
01702 standard
Framingham, MA
Pop: 37,206

Related Areas

Middlesex County Ayer, MA Massachusetts

Frequently Asked Questions

What county is ZIP code 01432 in? ▼
ZIP code 01432 (Ayer) is located in Middlesex County, Massachusetts. Middlesex County contains multiple ZIP codes, see the full list at /counties/middlesex-ma.
What is the population of ZIP code 01432? ▼
ZIP code 01432 in Ayer, MA has a population of 7,089 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 01432? ▼
The median household income in ZIP 01432 is $101,966, which is 34% above the national average of $76,288.
What is the average home value in ZIP 01432? ▼
The median home value in ZIP 01432 is $463,800, which is 67% above the national average of $278,155.
What is the demographic makeup of ZIP 01432? ▼
The largest racial group in ZIP 01432 is White at 70.7%. Hispanic or Latino residents make up 15.1% of the population.
How many businesses are in ZIP code 01432? ▼
ZIP code 01432 has 216 business establishments employing approximately 4,132 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 01432? ▼
The top industries by establishment count in ZIP 01432 are: Retail trade (29), Construction (23), Professional, scientific, and technical services (22). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 01432? ▼
According to the FHFA House Price Index, home values in ZIP 01432 increased by 7.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 153%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 01432? ▼
In ZIP code 01432, 61.7% of residents aged 25+ have a high school diploma or higher, and 41.9% 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 01432? ▼
The mean commute time for workers in ZIP code 01432 is 32.8 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 01432? ▼
In ZIP code 01432, approximately 69.5% of occupied housing units are owner-occupied and 30.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 01432? ▼
The poverty rate in ZIP code 01432 is 10.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.