Cambridge ZIP Codes — Middlesex County, MA

There are 6 unique ZIP codes in Cambridge, Massachusetts. Area code: 617/857.

ZIP codes

6.37

sq mi land

0.71

sq mi water

617/857

area code

Cambridge, MA ZIP code map

About Cambridge, MA

Cambridge, Massachusetts, is a vibrant city known for its rich academic heritage and innovation. Situated just across the Charles River from Boston, it is home to prestigious institutions such as Harvard University and the Massachusetts Institute of Technology (MIT). The city's unique blend of history, culture, and education makes it a fascinating place to explore.

Location & geography

Cambridge is located in Middlesex County, in the eastern part of Massachusetts. It is approximately two miles from downtown Boston, with neighboring cities including Somerville to the north, Arlington to the northwest, Watertown to the west, and Brookline to the south. The city's land area covers 6.37 square miles, and it also features a water area of 0.71 square miles.

Community & economy

The character of Cambridge is defined by its diverse population and vibrant cultural life. The economy is fueled by technology, education, and healthcare industries, which create a dynamic job market. Daily life in Cambridge is enhanced by numerous restaurants, shops, and recreational areas, providing residents and visitors alike with a rich urban experience.

Transportation

Cambridge is well-connected by several major highways, including Interstate 90, which runs east-west and connects to Boston and beyond. The nearest airport is Logan International Airport, located approximately 6 miles away, providing both domestic and international flights. Public transit is easily accessible, with multiple bus routes and the Massachusetts Bay Transportation Authority (MBTA) subway service connecting the city to surrounding areas.

History

Founded in 1630, Cambridge played a pivotal role in the early history of America, particularly in education and governance. The city became home to key industries, including publishing and technology, which have been instrumental in its growth. Notable events include the opening of Harvard College in 1636, making it the oldest institution of higher education in the United States.

Did you know?

A surprising fact about Cambridge is that it is home to the first American university, Harvard University, established in 1636. Additionally, the city has a significant contingent of tech startups, which contribute to its reputation as a hub of innovation.

ZIP codes for Cambridge, MA (6)

ZIP code	City	County	Map
02138	Cambridge	Middlesex	View map
02139	Cambridge	Middlesex	View map
02140	Cambridge	Middlesex	View map
02141	Cambridge	Middlesex	View map
02142	Cambridge	Middlesex	View map
02238	Cambridge	Middlesex	View map

Demographics & statistics

118,291

Population

30.7

Median age

$120,864

Median household income

$73,021

Per capita income

$1,105,100

Median home value

$2,760

Median monthly rent

29.5%

Home ownership

11.9%

Poverty rate

2.9%

Unemployment

21,099

Housing units

80.9%

Bachelor's or higher

Age distribution

Male Female

2,507

Under 5

2,446

1,918

5–9

1,871

1,702

10–14

1,661

4,471

15–19

4,363

8,638

20–24

8,428

16,243

25–34

15,850

7,982

35–44

7,788

4,971

45–54

4,850

2,160

55–59

2,108

2,169

60–64

2,116

4,328

65–74

4,224

1,969

75–84

1,921

813

85+

794

← Male

Female →

Age summary

Group	Count	%
Under 18	14,399	11.1%
18 and over	103,892	88.9%
65 and over	14,049	11.0%
Median age	30.7 years

Race & ethnicity

White 55.8%

Asian 18.1%

Black or African American 10.2%

Two or more races 7.6%

Hispanic or Latino 6%

Other race 2.1%

American Indian / Alaska Native 0.1%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	70,140	55.8%
Asian	22,769	18.1%
Black or African American	12,810	10.2%
Two or more races	9,612	7.6%
Hispanic or Latino	7,506	6%
Other race	2,651	2.1%
American Indian / Alaska Native	179	0.1%
Native Hawaiian / Pacific Islander	130	0.1%

Household income

Under $10k 6.4%

$10k–$15k 2.4%

$15k–$25k 4.4%

$25k–$35k 3.0%

$35k–$50k 5.6%

$50k–$75k 10.2%

$75k–$100k 10.2%

$100k–$150k 15.5%

$150k–$200k 13.1%

$200k+ 29.4%

Range	% of households
Under $10k	6.4%
$10k–$15k	2.4%
$15k–$25k	4.4%
$25k–$35k	3.0%
$35k–$50k	5.6%
$50k–$75k	10.2%
$75k–$100k	10.2%
$100k–$150k	15.5%
$150k–$200k	13.1%
$200k+	29.4%
Median income	$120,864

Housing

Home values

Under $50k 0.3%

$50k–$100k 0.4%

$100k–$150k 0.3%

$150k–$200k 1.2%

$200k–$300k 1.6%

$300k–$500k 3.9%

$500k–$1M 39.2%

$1M+ 53.1%

Housing overview

Metric	Value
Median home value	$1,105,100
Median rent / month	$2,760
Owner occupied	29.5%
Renter occupied	70.5%
Vacant	8.6%
Single-family detached	8.0%
Large apartment buildings	47.5%
Mobile homes	0.0%
Median rooms	3.9
Avg household size (owned)	2.12

Year built

Era	%
2020 or later	0.1%
2010–2019	13.3%
2000–2009	12.2%
1990–1999	5.9%
1980–1989	8.5%
1970–1979	8.9%
1960–1969	5.2%
1950–1959	4.0%
1940–1949	2.6%
1939 or earlier	39.4%

Bedrooms

Size	% of units
No bedroom (studio)	9.5%
1 bedroom	28.5%
2 bedrooms	38.5%
3 bedrooms	15.6%
4 bedrooms	5.3%
5+ bedrooms	2.6%

Vehicles per household

Vehicles	% of households
No vehicle	34.0%
1 vehicle	49.3%
2 vehicles	14.7%
3 or more	2.1%

Heating fuel

Fuel type	%
Utility gas	58.5%
Electricity	33.5%
Propane / LP gas	2.0%
Fuel oil	3.3%
Solar	0.2%
No fuel used	1.7%

Households & families

Household type	Count	%
Married-couple family	15,446	29.7%
Cohabiting couple	5,190	11.4%
Male householder, no spouse	12,711	26.3%
Female householder, no spouse	16,286	32.6%
Households with children under 18	8,511	15.7%
Households with seniors (65+)	10,808	19.5%
Average household size	2.04

Marital status

Status	Male	Female
Never married	58.9%	55.8%
Married	34.8%	31.3%
Separated	0.6%	1.0%
Widowed	1.2%	3.7%
Divorced	4.6%	8.0%

Education

Less than 9th grade 2.4%

Some HS, no diploma 1.7%

HS graduate 5.8%

Some college, no degree 6.9%

Associate's degree 2.3%

Bachelor's degree 31.1%

Graduate / professional 49.8%

Metric	%
HS diploma or higher	95.9%
Bachelor's or higher	80.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,563	4.5%
Kindergarten	976	3.5%
Elementary school	5,705	13.8%
High school	3,056	8.6%
College / grad school	28,186	69.5%

Employment

Industry of employment

Education & healthcare 37.6%

Professional & management 27.2%

Manufacturing 8.1%

Finance & real estate 5.2%

Retail trade 4.9%

Arts, food & hospitality 4.1%

Information 3.3%

Other services 2.6%

Transportation & utilities 2.5%

Public administration 2.4%

Construction 1.1%

Wholesale trade 0.8%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	80.1%
Service	6.4%
Sales & office	9.1%
Natural resources & construction	1.3%
Production & transportation	3.0%

Employment type

Type	%
Private sector	87.4%
Government	8.8%
Self-employed	3.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	20.3%
Carpool	3.2%
Public transit	20.9%
Walk	22.0%
Other means	7.9%
Avg commute (minutes)	25.6

Poverty

All people 11.9%

Under 18 years 10.4%

18 and over 11.9%

Married-couple families 2.8%

Female-led households 19.1%

Income support

Source	% of households
Social Security	17.1%
Retirement income	12.7%
Supplemental Security	2.6%
Cash public assistance	2.1%
Food stamps / SNAP	6.7%

Health indicators

Condition	%
High blood pressure	19.4%
High cholesterol	20.9%
Heart disease	2.9%
Stroke	1.5%
Asthma	9.6%
Arthritis	13.4%
Kidney disease	1.7%
Pulmonary disease	2.7%
Cancer	4.3%

Behavior / access	%
Binge drinking	18.2%
No physical activity	13.7%
Less than 7 hrs sleep	28.4%
Fair or poor health	6.6%
Poor mental health	12.9%
Poor physical health	5.3%
No health insurance	5.5%
Visited doctor (checkup)	72.9%
Visited dentist	74.6%
Cholesterol screening	88.1%
Teeth loss	7.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,802	1.6%

Disability	%
Any disability	6.5%
Under 18	4.0%
18–64 years	4.4%
65 and over	24.7%

Health insurance coverage

Type	%
Private insurance	86.5%
Public insurance	19.7%
Uninsured under 19	2.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	113,338	95.8%
Spanish	9,358	9.3%
Other Indo-European	1,672	1.5%
Asian & Pacific Islander	2,991	2.6%
Other languages	3,142	3.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	83,326	66.8%
Born in same state	80,091	64.4%
Born in different state	34,849	27.4%
Foreign born	3,235	2.4%
Naturalized citizen	34,965	33.2%
Not a US citizen	13,791	34.9%

Ancestry

Ancestry	Count	%
Italian	12,070	10.2%
French	9,841	8.3%
Arab	3,179	2.7%
German	1,204	1%
Irish	809	0.7%

Ancestry	Count	%
English	789	0.7%
Polish	775	0.7%
Norwegian	608	0.5%
Dutch	495	0.4%

Technology access

Metric	% of households
Computer access	44.3%
Internet access	97.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Cambridge, MA have?

Cambridge, MA has 5 ZIP codes: 02138, 02139, 02140, 02141, and 02142. Each ZIP code serves a distinct delivery area within the city and surrounding region.