ZIP code 02139 is in Middlesex County, Massachusetts. About 40,033 people live here in 16,012 households. The median home value is $1,087,500 and the median household income $134,586. The average commute takes about 27 minutes.
ZIP code tabulation area · ACS 2020–2024 · Updated October 24, 2026
$1,087,500median home valueMiddlesex County: $728K
96%of households have broadbandhome internet subscription
02139 in MassachusettsZIP codes coloured by median household income
02139
<$45K$125K+
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · U.S. Census Bureau, 2024 Gazetteer and 2020 ZCTA relationship files
People.
40,033 residents in 16,012 households, next to the Middlesex County figure.
11%
under 18
HereMiddlesex County
51%
aged 18–34
HereMiddlesex County
11%
aged 65 and over
HereMiddlesex County
34%
of households are people living alone
HereMiddlesex County
29%
of households are married couples
HereMiddlesex County
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates
Homes.
17,034 housing units; the median owner-occupied home is valued at $1,087,500 (±$59,104).
32%
of households own their home
HereMiddlesex County
9%
of homes are detached single-family houses
HereMiddlesex County
50%
are in buildings with 5 or more units
HereMiddlesex County
0%
are mobile homes
HereMiddlesex County
6%
of housing units are vacant
HereMiddlesex County
$2,691
median gross rent a month
HereMiddlesex County
When homes were built
2020 or later2%
2010–20193%
2000–20097%
1990–19994%
1980–198910%
1970–197911%
1960–19696%
1950–19594%
1940–19493%
1939 or earlier51%
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates
Income and work.
Household income and work, in 2024 dollars; median household income ±$8,697.
$134,586
median household income
HereMiddlesex County
13.0%
of people live below the poverty line
HereMiddlesex County
4.0%
unemployment rate
HereMiddlesex County
80%
of adults 25+ hold a bachelor’s degree or higher
HereMiddlesex County
The poverty rate uses the federal poverty thresholds, which vary with family size. It says nothing on its own about what a neighborhood is like to live in.
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates
Getting around.
How workers aged 16 and over get to work, and how long it takes.
27 min
average commute to work
HereMiddlesex County
10%
of commuters travel 45 minutes or more
HereMiddlesex County
17%
of workers drive or carpool
HereMiddlesex County
20%
take public transportation
HereMiddlesex County
33%
walk or bike
HereMiddlesex County
28%
work from home
HereMiddlesex County
41%
of households have no car
HereMiddlesex County
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates
Internet.
Home internet subscriptions.
96%
of households have a broadband subscription
HereMiddlesex County
3%
have no internet access at home
HereMiddlesex County
American Community Survey figures are estimates from a rolling sample, averaged over 2020–2024. Each comes with a margin of error, which is wider in places with fewer people.
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates
Businesses in 02139.
1,118 business establishments with paid employees have an address in this ZIP code.
Grocery stores and supermarkets8
Convenience stores11
Pharmacies and drug stores4
Retail bakeries3
Full-service restaurants69
Limited-service restaurants26
Coffee shops and snack bars17
Bars8
Physicians’ offices14
Dentists’ offices18
Child care centers16
Gyms and fitness centers10
Movie theaters0
Museums0
Counts are business establishments with paid employees, by the ZIP code of their address. Self-employed people without staff, and public facilities such as libraries, are not included.
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023
Health.
Estimated share of adults in 02139, next to the national figure.
76%
had a routine checkup in the past year
HereUnited States
71%
visited a dentist in the past year
HereUnited States
4%
of 18–64s have no health insurance
HereUnited States
16%
get no leisure-time physical activity
HereUnited States
33%
usually sleep less than 7 hours
HereUnited States
7%
smoke
HereUnited States
22%
have obesity
HereUnited States
6%
have diagnosed diabetes
HereUnited States
20%
have high blood pressure
HereUnited States
12%
report fair or poor general health
HereUnited States
16%
report frequent mental distress
HereUnited States
38%
often feel lonely
HereUnited States
11%
faced food insecurity in the past year
HereUnited States
10%
faced housing insecurity in the past year
HereUnited States
8%
lacked reliable transportation in the past year
HereUnited States
These are model-based estimates for adults from the CDC’s PLACES project, combining national health surveys with local population data. They are not counts of local patients, and small differences between nearby ZIP codes are within the margin of the model.
Source: Centers for Disease Control and Prevention, PLACES 2025 release (ZCTA), public domain
Nearest public schools.
In a straight line from the center of the ZIP code. Attendance zones are set by each school district.
Amigos SchoolCambridge0.3 mi
Prospect Hill Academy Charter SchoolCambridge0.4 mi
Fletcher/Maynard AcademyCambridge0.4 mi
CambridgeportCambridge0.5 mi
John M TobinCambridge0.6 mi
Source: National Center for Education Statistics, EDGE public school locations 2024–25
Nearby ZIP codes.
ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas, which closely match the postal ZIP codes used for addresses.
02139