Find the last 4 digits (ZIP+4) for an address in 02121

ZIP 02121, Dorchester, MA is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 02121 – Dorchester, MA

Dorchester, Massachusetts · Suffolk County · Eastern time

ZIP code02121
CityDorchester
StateMassachusetts
CountySuffolk County
Population29,040
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area1.89 sq mi
Center (lat, long)42.3054, -71.0870

Area codes in this area

339781617857

These are the area codes that most often serve ZIP 02121 (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

02119 Roxbury · 1.3 mi02130 Jamaica Plain · 1.4 mi02124 Dorchester Center · 1.5 mi02125 Dorchester · 1.8 mi02122 Dorchester · 1.9 mi02120 Roxbury Crossing · 1.9 mi02126 Mattapan · 1.9 mi02115 Boston · 2.4 mi

About ZIP 02121

ZIP code 02121 is assigned to Dorchester, Massachusetts. It lies in Suffolk County. Its Census area covers about 1.89 square miles of land. The closest neighboring ZIP is 02119 (Roxbury), about 1.3 miles away.

Every address in 02121 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