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Lexington, MA ZIP Codes

Lexington, Massachusetts has 2 ZIP codes: 2 for street addresses ( and ).

Your street decides which one you use.

Which Lexington ZIP code is my address in?

Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?

Lexington ZIP code map

ZIP code map of Lexington, MA2 ZIP code areas in Lexington: 02420, 02421. Dashed line: Lexington city limits. Grey areas: neighboring towns.02421024200242102420BurlingtonBedfordWoburnWalthamBelmontLincolnArlingtonWinchester0242102420BurlingtonBedfordWoburnWalthamBelmontArlington

Tap or point to an area to see its ZIP code.Full-size map

Dashed line: the Lexington Census outline.

Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).

All Lexington ZIP codes by type

ZIPType and post office or station
02420street delivery
Lexington
02421street delivery
Lexington

Lexington ZIP code questions

What is the main ZIP code for Lexington?

02420, the ZIP code of the main Lexington post office at 1661 Massachusetts Ave.

What county is Lexington in?

Middlesex County.

ZIP codes for towns near Lexington

Arlington, MA3 ZIP codes: 02474, 02476 and more · 4 milesWaltham, MA4 ZIP codes: 02451, 02452, 02453 and more · 4 milesWoburn, MA4 ZIP codes: 01801 and more · 5 milesWatertown, MA3 ZIP codes: 02472 and more · 6 milesMedford, MA2 ZIP codes: 02155 and more · 6 milesCambridge, MA6 ZIP codes: 02138, 02139, 02140 and more · 7 miles

More towns near Lexington: Somerville, Newton, Billerica, Malden, Everett, Brookline, Wellesley, Chelsea, Needham.

Sources and last checked

USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.

Checked October 20, 2026. Sources · How we build our lists · Corrections