Zip Code 02121 — Dorchester, MA
02121 is a ZIP Code associated with Dorchester, MA, located within Suffolk. The postal region supports an estimated population of 29,040 residents across Data Pending housing units, with a population density of 5,946.1 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.305700, -71.086930)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 02121 |
| Primary City | Dorchester |
| State / Province | MA |
| County | Suffolk |
| Total Population | 29,040 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 5,946.1 people/sq mi |
| Timezone | America/New_York |
How 02121 Compares
| Metric | ZIP 02121 | Suffolk County | MA State Average |
|---|
| Population | 29,040 | 780,506 | 7,043,978 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 5,946.1 /sq mi | -- | -- |
Nearby ZIP Codes
| ZIP Code | City | Distance | Population | Median Income |
|---|
| Zip 02119 | Roxbury | 1.3 mi | 27,377 | N/A |
| Zip 02130 | Jamaica Plain | 1.5 mi | 40,055 | N/A |
| Zip 02124 | Dorchester Center | 1.6 mi | 56,216 | N/A |
| Zip 02125 | Dorchester | 1.7 mi | 33,662 | N/A |
| Zip 02120 | Roxbury Crossing | 1.9 mi | 15,283 | N/A |
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 →