Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MA/LEXINGTON

Lexington ZIP codes, Massachusetts

Lexington, MA has 2 ZIP codes (02421 and 02420) and area codes 781 and 339. The largest is 02421.

USPS city name
2 ZIP codes
Overlapping the city
1 more
Population
34,295
Area codes
781, 339

Mail addressed to Lexington uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Lexington in numbers

About 34,295 people live in Lexington, in 12,477 households, the 44th-largest of Massachusetts's 248 census places. The median household income is $238,444 a year, 2.3 times the Massachusetts median of $103,960 (US: $80,734). The median owner-occupied home is valued at $1,203,100 (2.1 times the Massachusetts median), and median gross rent is $2,891 a month. The median age is 47.3; 84.3% of adults 25 and over hold a bachelor's degree or higher (47.3% across Massachusetts); the average commute takes 31 minutes.

Population34,295Lexington34,295
Households12,477Lexington12,477
Median age47.3Lexington47.3Massachusetts40.0US 38.9
Median household income$238,444Lexington$238,444Massachusetts$103,960US $80,734
Median home value$1,203,100Lexington$1,203,100Massachusetts$562,100US $332,700
Median gross rent$2,891Lexington$2,891Massachusetts$1,762US $1,413
Bachelor's degree or higher84.3%Lexington84.3%Massachusetts47.3%US 35.7%
Mean commute30.7 minLexington30.7 minMassachusetts29.1 minUS 26.4 min
Population density2,087 / sq miLexington2,087 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Lexington CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Lexington

ZIP codes with the USPS city name Lexington
ZIP City Type Population Median income Median home
02421 Lexington , MA Standard 18,080 $227,813 $1,205,700
02420 Lexington , MA Standard 16,215 $245,031 $1,200,300

Other ZIP codes overlapping Lexington

These ZIP codes cover part of Lexington but are addressed as somewhere else.

ZIP codes overlapping Lexington
ZIP City Type Population Median income Median home
01731 Hanscom Afb , MA Standard 2,110 $104,688 —

Map of Lexington ZIP codes

0242102420

The ZIP codes of Lexington, MA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Lexington

The nearest larger towns are Arlington (46,350 people, 3.8 mi), Waltham (64,902 people, 3.9 mi) and Woburn (41,939 people, 4.9 mi).

Towns near Lexington
TownPopulationDistance
Arlington 46,350 3.8 mi
Waltham 64,902 3.9 mi
Burlington 26,274 4.3 mi
Belmont 27,175 4.3 mi
Winchester 23,406 4.4 mi
Woburn 41,939 4.9 mi
Watertown 35,543 5.9 mi
Pinehurst 6,845 6.1 mi
Medford 59,354 6.3 mi
Stoneham 23,355 7.0 mi
Cambridge 118,796 7.4 mi
Somerville 81,036 7.6 mi
Newton 89,044 7.9 mi
Melrose 29,650 8.7 mi

More nearby: every ZIP code in Middlesex County · Massachusetts ZIP codes

Cite this page

zipcodes.pro. “Lexington, MA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ma/lexington

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