Get API Key →
US ZIP Code Profile

ZIP Code 02420
Lexington, Massachusetts

ZIP code 02420 is in Lexington, located in Middlesex County, Massachusetts, within the Boston-Cambridge-Newton metro area. Its 2020 Census population was 15,502. The estimated median adjusted gross income per tax return is $156,504, and about 43% of filers report $200,000 or more.

2020 Population
15,502
Census ZCTA
County
Middlesex
FIPS 25017
Median income (est.)
$156,504
IRS SOI 2022
Land Area
6.587 mi²
+ 0.045 mi² water

01Location & Geography

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

Primary CityLexington, 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
Coordinates42.457054, -71.21546
Land / Water Area6.587 mi² land · 0.045 mi² water

02Income & Economics

Distribution of the 7,170 individual tax returns filed in 02420 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.7%
$25K–$50K
7.4%
$50K–$75K
7.1%
$75K–$100K
6.1%
$100K–$200K
17.2%
$200K+
42.5%
The $200,000+ bracket accounts for 89% of 02420's total adjusted gross income, from 43% of returns — a concentration that drives the gap between the median ($156,504) 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 02420's IRS income metrics, 2020–2022.

Median income (2021→2022)
$156,504
▲ 2.1%
Filers earning $200K+
42.5%
▲ 0.6 pt
Total filers
7,170
▲ 1.0%
GET /zipc/v2/zipcodes/02420/soi?year=… $131K 2020 $153K 2021 $157K 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 02420 ZCTA.

2000
14,217
 
2010
14,052
▼ -1.2%
2020
15,502
▲ +10.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 02420. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 02420

Lexington and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 02420 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeBranch
Carrier Route SortB
USPS Finance Number240007
City AliasesLexington

07Frequently Asked Questions

What county is ZIP code 02420 in?

ZIP code 02420 is in Middlesex County, Massachusetts (county FIPS code 25017).

What city is ZIP code 02420?

The primary USPS city for 02420 is Lexington, MA.

What metro area (MSA) is 02420 in?

02420 is part of the Boston-Cambridge-Newton, MA-NH Metro Area (MSA code 14460).

What is the population of ZIP code 02420?

The 2020 Census population of 02420 was 15,502 residents.

What is the median income in ZIP code 02420?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 02420 is about $156,504, with around 43% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.