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US ZIP Code Profile

ZIP Code 02142
Cambridge, Massachusetts

ZIP code 02142 is in Cambridge, located in Middlesex County, Massachusetts, within the Boston-Cambridge-Newton metro area. Its 2020 Census population was 4,499. The estimated median adjusted gross income per tax return is $87,500, and about 22% of filers report $200,000 or more.

2020 Population
4,499
Census ZCTA
County
Middlesex
FIPS 25017
Median income (est.)
$87,500
IRS SOI 2022
Land Area
0.278 mi²
+ 0.211 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityCambridge, MA
CountyMiddlesex County (FIPS 25017)
StateMassachusetts (FIPS 25)
Metro Area (MSA)Boston-Cambridge-Newton, MA-NH Metro Area (14460)
Census Region / DivisionNortheast Region · New England Division
Coordinates42.361996, -71.08159
Land / Water Area0.278 mi² land · 0.211 mi² water

02Income & Economics

Distribution of the 2,480 individual tax returns filed in 02142 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
13.7%
$25K–$50K
16.9%
$50K–$75K
14.1%
$75K–$100K
10.5%
$100K–$200K
23.0%
$200K+
21.8%
The $200,000+ bracket accounts for 70% of 02142's total adjusted gross income, from 22% of returns — a concentration that drives the gap between the median ($87,500) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 02142's IRS income metrics, 2020–2022.

Median income (2021→2022)
$87,500
▲ 5.7%
Filers earning $200K+
21.8%
▼ 0.4 pt
Total filers
2,480
▲ 12.2%
GET /zipc/v2/zipcodes/02142/soi?year=… $83K 2020 $83K 2021 $88K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 02142 ZCTA.

2000
2,258
 
2010
3,141
▲ +39.1%
2020
4,499
▲ +43.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 02142. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 02142

Cambridge and its immediate neighbors, sorted by distance.

3.0 mi
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Distance from 02142 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number241065
City AliasesCambridge, Kendall Square

07Frequently Asked Questions

What county is ZIP code 02142 in?

ZIP code 02142 is in Middlesex County, Massachusetts (county FIPS code 25017).

What city is ZIP code 02142?

The primary USPS city for 02142 is Cambridge, MA.

What metro area (MSA) is 02142 in?

02142 is part of the Boston-Cambridge-Newton, MA-NH Metro Area (MSA code 14460).

What is the population of ZIP code 02142?

The 2020 Census population of 02142 was 4,499 residents.

What is the median income in ZIP code 02142?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 02142 is about $87,500, with around 22% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.