Find the last 4 digits (ZIP+4) for an address in 02421

ZIP 02421, Lexington, MA is filled in. Just type the street address.

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ZIP Code 02421 – Lexington, MA

Lexington, Massachusetts · Middlesex County · Eastern time

ZIP code02421
CityLexington
StateMassachusetts
CountyMiddlesex County
Population18,080
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area9.57 sq mi
Center (lat, long)42.4385, -71.2396

Area codes in this area

781339

These are the area codes that most often serve ZIP 02421 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

02420 Lexington · 1.8 mi02451 Waltham · 2.6 mi01731 Hanscom Afb · 2.9 mi02452 Waltham · 3.1 mi02475 Arlington Heights · 3.3 mi02476 Arlington · 3.7 mi01773 Lincoln · 3.7 mi02478 Belmont · 4.2 mi

About ZIP 02421

ZIP code 02421 is assigned to Lexington, Massachusetts. It lies in Middlesex County. Its Census area covers about 9.57 square miles of land. The closest neighboring ZIP is 02420 (Lexington), about 1.8 miles away.

Every address in 02421 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources