Zip Code 02122 — Dorchester, MA

ZIP Code 02122 is associated with Dorchester, MA, in Suffolk County. The listed population estimate is 23,479; estimated density is 5,340.8 people per square mile. Among records with population estimates, it ranks #18 of 33 in Suffolk County and #104 of 532 in MA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.294270, -71.051850)

Data MetricLocal Statistic
Postal / Zip Code02122
Primary CityDorchester
State / ProvinceMA
CountySuffolk
Total Population23,479
Population Density5,340.8 people/sq mi
TimezoneAmerica/New_York

How 02122 Compares

MetricZIP 02122Suffolk County recordsMA records
Population estimate23,479780,506 (sum)7,043,978 (sum)
Population Density5,340.8 /sq mi----
County population rank#18 of 33----
State population rank#104 of 532----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MA

ZIP CodeCityDistancePopulation estimate
ZIP 02124Dorchester Center1.1 mi56,216
ZIP 02171Quincy1.4 mi20,164
ZIP 02125Dorchester1.5 mi33,662
ZIP 02121Dorchester2.0 mi29,040
ZIP 02126Mattapan2.4 mi26,583

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →