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 High-density area
- $101,966
- Median income Above-median income area
- $463,800
- Median home value Above-median home value
- 41.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 01432 (Ayer, MA) rose +7.9% from 2023 to 2024. The all-transactions index moved from 234.3 in 2023 to 252.8 in 2024 (2000 = 100).
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 average Massachusetts ZIP), while per-capita income is $58,087. The poverty rate is 10.7%, with unemployment at 7.1%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $463,800 (23% below the average Massachusetts ZIP), and median rent is $1,442; owner occupancy is 69.5%.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Middlesex County, so 01432 can be compared with both its immediate and county-level context.
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.
- Retail trade
Retail trade
29 establishments
- Construction
Construction
23 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
22 establishments
- Manufacturing
Manufacturing
21 establishments
- Other services (except public administration)
Other services (except public administration)
21 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, 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
Who lives in ZIP 01432?
39.0
Median Age
49.6%
Male
50.4%
Female
10.2%
Foreign-Born
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 ZIP avg
$58,087
Per Capita Income
10.7%
Poverty Rate
7.1%
Unemployment Rate
32.8 min
Mean Commute Time
How ZIP 01432 ranks among Massachusetts ZIPs
Ayer, MA household income vs. every Massachusetts ZIP code
Median household income among 505 reporting Massachusetts ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$101,966 40th percentile higher than 40% of 505 Massachusetts ZIPs
Each bar is a $20K-wide band; taller bars hold more Massachusetts 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
3,804housing units
3,804
Total Housing Units
3,567
Occupied Units
237
Vacant Units
2.31
Avg Household Size
Occupancy Type
$463,800
Median Home Value
-23% vs state ZIP avg
$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.
- 01886
Westford (01886)
21,951 residents
- 01463
Pepperell (01463)
11,497 residents
- 01450
Groton (01450)
10,646 residents
- 01460
Littleton (01460)
8,924 residents
- 01464 7,211
Shirley (01464)
7,211 residents
- 01432 7,089
Ayer (01432)
7,089 residents
- 01719 4,996
Boxborough (01719)
4,996 residents
- 01740 4,897
Bolton (01740)
4,897 residents
- 01451 4,747
Harvard (01451)
4,747 residents
What this shows Among its immediate neighbors, ZIP 01432 ranks #6 by population - useful context the national average alone can't give.
ZIP 01432 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 01451
Harvard (01451)
$214,792 median income
- 01740
Bolton (01740)
$205,449 median income
- 01450
Groton (01450)
$193,292 median income
- 01886
Westford (01886)
$187,198 median income
- 01434
Devens (01434)
$162,143 median income
- 01460
Littleton (01460)
$149,722 median income
- 01719
Boxborough (01719)
$144,611 median income
- 01463
Pepperell (01463)
$123,911 median income
- 01464
Shirley (01464)
$122,365 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 01432, both outside MA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (7,089 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Middlesex County
Related Areas
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.
Related
Take this with you
What to do with ZIP 01432's numbers, next.
- See how ZIP 01432 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Ayer, MA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.