Zip code 02140: Cambridge, Massachusetts

Q: What city is zip code 02140?

02140 is assigned to Cambridge, Massachusetts. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 02140 in?

02140 is in Middlesex County, Massachusetts.

Q: What is the population of 02140?

About 21,204 people live in 02140, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 02140?

The median household income in 02140 is $135,286.

Q: What zip codes are near 02140?

The closest zip codes to 02140 are 02144, 02138, 02163, 02238, 02143.

Residential delivery areaMiddlesex CountyEastern Time

Population

21,204

Median household income

$135K

U.S. $81K

Median home value

$1.1M

U.S. $333K

Median rent

$2,615/mo

U.S. $1,413

Median age

33.9

U.S. 38.9

Land area

1.2 sq mi

18,311 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 02140

02140 is a dense urban zip code in Cambridge, Massachusetts (Middlesex County), covering 1.2 sq mi of land. About 21,204 people live here, or 18,311 per square mile. The median resident is 33.9 years old, compared with 38.9 nationally.

The median household earns $135,286 a year, 68% above the national median of $80,734. 11.1% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $1,149,800, or 8.5 years of median household income (U.S.: 4.1 years), which makes homes relatively expensive for local earners. 35% of occupied homes are lived in by their owners, and renters pay a median of $2,615 a month.

79% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 31.9 minutes each way, and 32% of workers work from home; working from home is more common than any single way of commuting. The most common jobs among working residents are in engineering and science; computer and math (tech); and education. 37% of households speak a language other than English at home, most often another Indo-European language such as French, German, Russian or Hindi.

How 02140 compares

Sorted from highest to lowest national percentile

Tech workers15.1%
99th
U.S. 3.8% · MA 4.9%5th of 520 in MA
Bachelor's degree or higher79.1%
98th
StrengthU.S. 35.7% · MA 47.3%45th of 521 in MA
Median home value$1,149,800
97th
U.S. $332,700 · MA $562,10035th of 506 in MA
Population density18,311/sq mi
96th
U.S. 95/sq mi · MA 903/sq mi19th of 522 in MA
Per capita income$86,528
96th
StrengthU.S. $44,673 · MA $57,89773rd of 522 in MA
Median gross rent$2,615
96th
U.S. $1,413 · MA $1,76235th of 461 in MA
Work from home32.2%
96th
U.S. 15.1% · MA 18.6%52nd of 520 in MA
Median earnings per worker$84,129
95th
StrengthU.S. $49,666 · MA $62,09587th of 519 in MA
Median household income$135,286
91st
StrengthU.S. $80,734 · MA $103,960133rd of 503 in MA
Foreign-born residents31.9%
89th
U.S. 14.1% · MA 18%32nd of 522 in MA
Diversity index65.9
85th
U.S. 61.4 · MA 52.736th of 522 in MA
Average commute31.9 min
83rd
WeaknessU.S. 26.4 min · MA 29.1 min161st of 504 in MA
Broadband access95.3%
79th
U.S. 91% · MA 92.8%193rd of 518 in MA
Income inequality (Gini)0.474
78th
U.S. 0.483 · MA 0.489119th of 517 in MA
Housing vacancy10.1%
72nd
U.S. 10.1% · MA 8.1%150th of 519 in MA
Poverty rate11.1%
51st
U.S. 12.5% · MA 10%118th of 519 in MA
Population21,204
33rd
U.S. 334,922,499 · MA 7,044,056120th of 522 in MA
Residents 65 and older13%
23rd
U.S. 17.2% · MA 17.9%462nd of 522 in MA
Self-employed workers7.2%
22nd
U.S. 10% · MA 8.8%359th of 520 in MA
Government workers10.4%
22nd
U.S. 14.5% · MA 12.7%369th of 520 in MA
Rent-burdened renters40.2%
16th
StrengthU.S. 51.1% · MA 51.8%396th of 506 in MA
Median age33.9
15th
U.S. 38.9 · MA 40472nd of 522 in MA
Healthcare workers6.9%
14th
U.S. 9.7% · MA 10.3%432nd of 520 in MA
Unemployment rate2.6%
11th
StrengthU.S. 5.2% · MA 5.2%417th of 520 in MA
Residents under 1815.8%
10th
U.S. 22% · MA 19.4%367th of 522 in MA
Homeownership rate34.9%
6th
WeaknessU.S. 65.2% · MA 62.5%474th of 518 in MA
Uninsured rate2.2%
6th
StrengthU.S. 8.4% · MA 2.6%206th of 521 in MA
Veterans1.7%
4th
U.S. 6.2% · MA 4.3%480th of 522 in MA

Measure	02140	Middlesex	MA	U.S.	National percentile	Rank in MA
Tech workers	15.1%	7.8%	4.9%	3.8%	99th	5th of 520
Bachelor's degree or higherStrength	79.1%	59.5%	47.3%	35.7%	98th	45th of 521
Median home value	$1,149,800	$727,800	$562,100	$332,700	97th	35th of 506
Population density	18,311/sq mi	2,003/sq mi	903/sq mi	95/sq mi	96th	19th of 522
Per capita incomeStrength	$86,528	$69,556	$57,897	$44,673	96th	73rd of 522
Median gross rent	$2,615	$2,201	$1,762	$1,413	96th	35th of 461
Work from home	32.2%	24.7%	18.6%	15.1%	96th	52nd of 520
Median earnings per workerStrength	$84,129	$73,671	$62,095	$49,666	95th	87th of 519
Median household incomeStrength	$135,286	$130,847	$103,960	$80,734	91st	133rd of 503
Foreign-born residents	31.9%	23.1%	18%	14.1%	89th	32nd of 522
Diversity index	65.9	54.3	52.7	61.4	85th	36th of 522
Average commuteWeakness	31.9 min	29.9 min	29.1 min	26.4 min	83rd	161st of 504
Broadband access	95.3%	94.7%	92.8%	91%	79th	193rd of 518
Income inequality (Gini)	0.474	0.475	0.489	0.483	78th	119th of 517
Housing vacancy	10.1%	4.5%	8.1%	10.1%	72nd	150th of 519
Poverty rate	11.1%	7.7%	10%	12.5%	51st	118th of 519
Population	21,204	1,638,365	7,044,056	334,922,499	33rd	120th of 522
Residents 65 and older	13%	16.3%	17.9%	17.2%	23rd	462nd of 522
Self-employed workers	7.2%	8.7%	8.8%	10%	22nd	359th of 520
Government workers	10.4%	10.8%	12.7%	14.5%	22nd	369th of 520
Rent-burdened rentersStrength	40.2%	47.1%	51.8%	51.1%	16th	396th of 506
Median age	33.9	38.9	40	38.9	15th	472nd of 522
Healthcare workers	6.9%	8.9%	10.3%	9.7%	14th	432nd of 520
Unemployment rateStrength	2.6%	4.4%	5.2%	5.2%	11th	417th of 520
Residents under 18	15.8%	19.5%	19.4%	22%	10th	367th of 522
Homeownership rateWeakness	34.9%	61.3%	62.5%	65.2%	6th	474th of 518
Uninsured rateStrength	2.2%	2.4%	2.6%	8.4%	6th	206th of 521
Veterans	1.7%	3.3%	4.3%	6.2%	4th	480th of 522

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

12%

5–17

18–24

27%

25–34

16%

35–44

10%

45–54

55–64

65–74

75+

Median age

33.9

Under 18

15.8%

65 and over

13%

Race and ethnicity

White52%
Black16%
Hispanic6%
Asian18%
Native American0%
Pacific Islander0.0%
Other0.5%
Multiracial7%

Diversity index

65.9

U.S. 61.4

Foreign-born

31.9%

U.S. 14.1%

Born in state

29.7%

Language spoken at home (households)

English only

63%

Spanish

Other Indo-European

17%

Asian / Pacific

Other

Households

Households: 9,944
Average household size: 2.1
Family households: 43.8%
Married couples: 35.5%
Living alone: 36.7%
Veterans (of adults): 1.7%
Male / female: 52% / 48%

Income and poverty

Household income distribution

<$25k

11%

$25–50k

$50–75k

$75–100k

$100–150k

17%

$150–200k

13%

$200k+

33%

Median household income

02140

$135,286

Middlesex Co.

$130,847

Massachusetts

$103,960

United States

$80,734

Per capita income

$86,528

U.S. $44,673

Poverty rate

11.1%

U.S. 12.5%

Households earning $150K+

46.6%

U.S. 23%

Income inequality (Gini)

0.474

U.S. 0.483

Housing

Median home value

02140

$1,149,800

Middlesex Co.

$727,800

Massachusetts

$562,100

United States

$332,700

Median gross rent

02140

$2,615

Middlesex Co.

$2,201

Massachusetts

$1,762

United States

$1,413

Types of housing

Single-family

18%

2–4 units

29%

5–19 units

14%

20+ units

39%

Mobile home

Boat, RV, van

Housing units: 11,066
Owner-occupied: 34.9%
Vacant: 10.1%
Median year built: 1955
Median rooms: 4.1
Renters paying 30%+ of income: 40.2%
Renters paying 50%+ of income: 13.4%
Home value to income: 8.5× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

25%

Carpooled

Transit

27%

Walked

Bicycle

Worked from home

32%

Other

Commute time (one way)

<10 min

10–19

14%

20–29

25%

30–44

37%

45–59

14%

60+

Average commute

31.9 min

U.S. 26.4 min

Unemployment

2.6%

U.S. 5.2%

In labor force

75.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Engineering and science

18%

Computer and math

15%

Education

12%

Management

12%

Healthcare

Business and finance

Legal and social services

Sales

Office and admin

Transportation and moving

Cleaning and personal care

Production

Arts, media and sports

Food service

Construction and repair

Police and fire

Farming, fishing and forestry

0.3%

Industries

Professional and technical services

26%

Education

20%

Health care and social assistance

12%

Manufacturing

11%

Retail

Finance, insurance and real estate

Public administration

Other services

Restaurants and hotels

Information

Transportation, warehousing and utilities

Admin, support and management

Arts and recreation

Construction

Wholesale

Agriculture and mining

0.4%

Median earnings per worker

$84,129

U.S. $49,666

Self-employed

7.2%

U.S. 10%

Government workers

10.4%

U.S. 14.5%

Nonprofit workers

25.4%

U.S. 8.8%

Median earnings by type of work

Type of work	02140	U.S.
Management, business, science and arts	$100,541	$74,888
Service	$34,804	$26,804
Sales and office	$36,165	$40,476
Construction and maintenance	$42,292	$49,199
Production and transportation	$26,977	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

Some college

Associate's

Bachelor's

27%

Graduate

52%

High school graduate or higher: 95.2%
Bachelor's degree or higher: 79.1%
Graduate or professional degree: 52.2%
Households with broadband: 95.3%
Cable, fiber or DSL: 86.7%
No internet access: 2.2%
Without health insurance: 2.2%
Limited-English households: 7.9%

Geography

City (USPS): Cambridge
State: Massachusetts
County: Middlesex County
Center point: 42.3922° N, 71.1340° W
Land area: 1.2 sq mi
Water area: under 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Cambridge100% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 02140

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
02144	Somerville, MA	0.8 mi	25,448	$150,313	$988,800
02138	Cambridge, MA	0.9 mi	38,509	$119,967	$1,212,400
02163	Boston, MA	1.8 mi	1,817	$84,583	—
02238	Cambridge, MA · PO box	1.9 mi	—	—	—
02143	Somerville, MA	2 mi	25,513	$130,753	$926,800
02156	West Medford, MA · PO box	2.1 mi	—	—	—
02145	Somerville, MA	2.3 mi	27,495	$123,755	$828,600
02153	Medford, MA · PO box	2.3 mi	—	—	—
02474	Arlington, MA	2.3 mi	28,642	$150,560	$933,200
02134	Allston, MA	2.3 mi	17,667	$78,679	$657,300
02478	Belmont, MA	2.4 mi	27,175	$183,137	$1,159,000
02479	Waverley, MA · PO box	2.5 mi	—	—	—

Zip codes like 02140 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 02140

What city is zip code 02140?

02140 is assigned to Cambridge, Massachusetts. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 02140 in?

02140 is in Middlesex County, Massachusetts.

What is the population of 02140?

About 21,204 people live in 02140, according to the Census Bureau's American Community Survey.

What time zone is 02140 in?

02140 is in Eastern Time.

What is the median household income in 02140?

The median household income in 02140 is $135,286.

What zip codes are near 02140?

The closest zip codes to 02140 are 02144, 02138, 02163, 02238, 02143.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 02140, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.