Massachusetts is home to 449 ZIP codes spanning 14 counties and 354 cities and towns, making it one of the more densely coded states in the northeastern United States relative to its size. ZIP codes in Massachusetts range from 01001 in the western part of the state all the way to 05501, a special-purpose code assigned to a federal mail facility in Andover. The state's postal geography reflects its mix of dense urban neighborhoods — particularly in Boston and Cambridge — alongside smaller mill cities, historic towns, and scenic coastal communities on Cape Cod and the Islands. Whether you're looking up a ZIP for Beacon Hill, Worcester, or Nantucket, Massachusetts offers a fascinating cross-section of American postal history and regional diversity.
Massachusetts ZIP codes span prefixes from 010 through 027, plus the unique 055 prefix, reflecting the state's geographic diversity from the rural Berkshires in the west to the coastal communities of Cape Cod and the Islands in the east. The lower prefixes (010–017) generally cover inland and central Massachusetts, while prefixes 018–027 shift toward the Greater Boston area and the South Shore. This west-to-east progression is typical of how the U.S. Postal Service originally assigned ZIP code sectors when the system launched in 1963.
Worcester County leads all Massachusetts counties with 78 ZIP codes, a reflection of its status as the largest county by land area in the state, encompassing dozens of small towns and rural communities spread across central Massachusetts.
Quick facts
Boston's downtown core uses ZIP code 02101, and the city's many neighborhoods each have their own distinct codes — some of the most densely assigned ZIP codes in New England.
The 055 prefix used in Massachusetts is an unusual outlier, as it jumps far outside the main 010–027 range; ZIP code 05501 is assigned to the IRS processing center in Andover, making it one of the few non-geographic, agency-specific ZIP codes in the country.
Massachusetts was one of the first states where the ZIP code system gained rapid public adoption, partly due to a major U.S. Postal Service promotional campaign in 1963 that featured the cartoon character Mr. ZIP appearing on Boston-area transit ads.
Frequently asked questions
What ZIP codes are in Boston, Massachusetts?
Boston has one of the most extensive sets of ZIP codes of any U.S. city, with codes ranging from 02101 to 02137 and beyond, covering distinct neighborhoods such as Back Bay (02116), South Boston (02127), Roxbury (02119), Dorchester (02122, 02124, 02125), Jamaica Plain (02130), and Beacon Hill (02108), among many others. In total, Boston proper uses more than 25 individual ZIP codes.
How many ZIP codes does Massachusetts have?
Massachusetts has 449 ZIP codes in total, covering the entire state from its western Berkshire hill towns all the way to the coastal communities of Cape Cod, Martha's Vineyard, and Nantucket. This count includes standard delivery ZIP codes as well as a small number of unique-purpose codes like the IRS facility ZIP 05501 in Andover.
What do Massachusetts ZIP codes start with?
Massachusetts ZIP codes primarily start with the prefixes 010 through 027, progressing roughly from west to east across the state. The 010–017 prefixes cover western and central Massachusetts, prefixes 018 and 019 serve the North Shore region, and prefixes 020–027 cover Greater Boston, the South Shore, Cape Cod, and the Islands. Massachusetts also uses the rare 055 prefix, which is assigned to a single IRS mail-processing facility in Andover.
Which county in Massachusetts has the most ZIP codes?
Worcester County has the most ZIP codes of any county in Massachusetts, with 78 ZIP codes spread across its many towns and rural communities in the heart of the state. Middlesex County comes in second with 61 ZIP codes, benefiting from its dense suburban population surrounding Boston, while Suffolk County — which contains Boston itself — ranks third with 43 ZIP codes despite being one of the smallest counties by land area.
Looking for a downloadable Massachusetts ZIP code list? Our
Gold Edition database includes all
449 MA ZIP codes with city, county,
latitude, longitude, timezone, and FIPS codes — available in Excel, CSV, and Access formats.
Last updated April 2026
Demographics & statistics
6,951,475
Population
40.5
Median age
$104,452
Median household income
$53,557
Per capita income
$517,441
Median home value
$1,462
Median monthly rent
71.3%
Home ownership
8.6%
Poverty rate
4.9%
Unemployment
1,866,724
Housing units
47.0%
Bachelor's or higher
Age distribution
MaleFemale
175,284
Under 5
174,977
181,950
5–9
181,633
199,701
10–14
199,352
228,049
15–19
227,651
241,518
20–24
241,097
491,983
25–34
491,124
440,016
35–44
439,248
447,078
45–54
446,297
246,689
55–59
246,259
231,648
60–64
231,244
347,628
65–74
347,020
167,213
75–84
166,921
80,017
85+
79,878
← Male
Female →
Age summary
Group
Count
%
Under 18
1,363,471
18.8%
18 and over
5,588,004
81.2%
65 and over
1,188,677
19.6%
Median age
40.5 years
Race & ethnicity
White65.9%
Hispanic or Latino9.3%
Two or more races7.3%
Black or African American6.5%
Asian6.3%
Other race4.5%
American Indian / Alaska Native0.2%
Group
Count
%
White
5,047,858
65.9%
Hispanic or Latino
710,506
9.3%
Two or more races
555,773
7.3%
Black or African American
497,567
6.5%
Asian
486,184
6.3%
Other race
346,648
4.5%
American Indian / Alaska Native
14,679
0.2%
Household income
Under $10k3.8%
$10k–$15k3.0%
$15k–$25k5.3%
$25k–$35k5.2%
$35k–$50k7.9%
$50k–$75k13.1%
$75k–$100k11.4%
$100k–$150k18.4%
$150k–$200k11.8%
$200k+20.1%
Range
% of households
Under $10k
3.8%
$10k–$15k
3.0%
$15k–$25k
5.3%
$25k–$35k
5.2%
$35k–$50k
7.9%
$50k–$75k
13.1%
$75k–$100k
11.4%
$100k–$150k
18.4%
$150k–$200k
11.8%
$200k+
20.1%
Median income
$104,452
Housing
Home values
Under $50k1.7%
$50k–$100k1.2%
$100k–$150k2.5%
$150k–$200k4.3%
$200k–$300k14.9%
$300k–$500k31.7%
$500k–$1M31.8%
$1M+11.0%
Housing overview
Metric
Value
Median home value
$517,441
Median rent / month
$1,462
Owner occupied
71.3%
Renter occupied
28.7%
Vacant
10.8%
Single-family detached
63.1%
Large apartment buildings
8.7%
Mobile homes
1.2%
Median rooms
5.9
Avg household size (owned)
2.55
Year built
Era
%
2020 or later
0.3%
2010–2019
5.4%
2000–2009
8.0%
1990–1999
8.9%
1980–1989
12.1%
1970–1979
12.4%
1960–1969
9.8%
1950–1959
11.1%
1940–1949
4.8%
1939 or earlier
27.2%
Bedrooms
Size
% of units
No bedroom (studio)
2.3%
1 bedroom
11.4%
2 bedrooms
25.1%
3 bedrooms
37.2%
4 bedrooms
18.9%
5+ bedrooms
5.1%
Vehicles per household
Vehicles
% of households
No vehicle
8.5%
1 vehicle
32.0%
2 vehicles
39.3%
3 or more
20.1%
Heating fuel
Fuel type
%
Utility gas
41.6%
Electricity
14.9%
Propane / LP gas
6.4%
Fuel oil
31.2%
Wood
3.9%
Solar
0.2%
No fuel used
0.5%
Households & families
Household type
Count
%
Married-couple family
1,265,475
50.8%
Cohabiting couple
206,025
7.3%
Male householder, no spouse
480,185
16.4%
Female householder, no spouse
778,743
25.5%
Households with children under 18
777,753
27.8%
Households with seniors (65+)
859,357
34.3%
Average household size
2.46
Marital status
Status
Male
Female
Never married
35.5%
30.7%
Married
52.3%
48.5%
Separated
1.1%
1.4%
Widowed
2.5%
8.3%
Divorced
8.5%
11.1%
Education
Less than 9th grade3.0%
Some HS, no diploma3.8%
HS graduate22.5%
Some college, no degree15.5%
Associate's degree8.1%
Bachelor's degree25.4%
Graduate / professional21.7%
Metric
%
HS diploma or higher
93.2%
Bachelor's or higher
47.0%
School enrollment (ages 3–17)
Type
Count
%
Nursery / preschool
101,789
6.4%
Kindergarten
72,627
4.6%
Elementary school
603,379
37.8%
High school
345,380
22.2%
College / grad school
550,910
28.6%
Employment
Industry of employment
Education & healthcare27.5%
Professional & management14.3%
Retail trade10.0%
Manufacturing9.2%
Arts, food & hospitality7.6%
Finance & real estate7.2%
Construction6.8%
Other services4.4%
Transportation & utilities4.1%
Public administration4.0%
Wholesale trade2.1%
Information2.0%
Agriculture & mining0.8%
Occupation
Category
%
Management, business & arts
49.8%
Service
14.8%
Sales & office
18.3%
Natural resources & construction
7.8%
Production & transportation
9.3%
Employment type
Type
%
Private sector
79.7%
Government
13.1%
Self-employed
7.1%
Unpaid family workers
0.2%
Commute
Method
%
Drive alone
68.0%
Carpool
6.7%
Public transit
4.6%
Walk
4.1%
Other means
1.7%
Avg commute (minutes)
29.1
Poverty
All people8.6%
Under 18 years9.9%
18 and over8.3%
Married-couple families2.9%
Female-led households14.4%
Income support
Source
% of households
Social Security
32.4%
Retirement income
24.4%
Supplemental Security
4.8%
Cash public assistance
2.8%
Food stamps / SNAP
10.0%
Health indicators
Condition
%
High blood pressure
28.1%
High cholesterol
29.9%
Heart disease
5.5%
Stroke
2.6%
Asthma
10.5%
Arthritis
24.5%
Kidney disease
2.6%
Pulmonary disease
5.3%
Cancer
7.0%
Behavior / access
%
Binge drinking
17.1%
No physical activity
19.1%
Less than 7 hrs sleep
30.6%
Fair or poor health
10.7%
Poor mental health
13.5%
Poor physical health
8.4%
No health insurance
6.3%
Visited doctor (checkup)
78.0%
Visited dentist
73.5%
Cholesterol screening
90.9%
Teeth loss
10.9%
Veterans & disability
Veterans
Count
%
Civilian veterans
264,581
5.6%
Disability
%
Any disability
11.8%
Under 18
4.7%
18–64 years
8.7%
65 and over
29.1%
Health insurance coverage
Type
%
Private insurance
77.0%
Public insurance
36.3%
Uninsured under 19
1.4%
Language & origin
Language spoken at home (age 5+)
Language
Count
%
English only
6,601,214
95.4%
Spanish
636,976
6.0%
Other Indo-European
268,611
2.3%
Asian & Pacific Islander
212,986
2.1%
Other languages
127,154
1.3%
Place of birth & citizenship
Origin
Count
%
Native born (US)
5,725,754
87.6%
Born in same state
5,520,184
85.3%
Born in different state
4,131,746
62.1%
Foreign born
205,570
2.3%
Naturalized citizen
1,225,721
12.4%
Not a US citizen
670,638
61.7%
Ancestry
Ancestry
Count
%
Italian
1,313,261
18.9%
French
657,626
9.5%
Arab
256,936
3.7%
German
218,064
3.1%
Norwegian
41,316
0.6%
Ancestry
Count
%
Polish
34,317
0.5%
English
33,987
0.5%
Irish
18,905
0.3%
Dutch
14,333
0.2%
Technology access
Metric
% of households
Computer access
40.1%
Internet access
94.7%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Need all 449 Massachusetts ZIP codes?Download the complete database — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.