Dorchester, MA 02121 ZIP Code Profile

Related Place Profiles:
Boston, MA | Dorchester, MA | Grove Hall, MA

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ZIP Code 02121: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Dorchester, MA 02121

Acceptable Alternative
Boston, MA 02121
Grove Hall, MA 02121

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 408
  • Single Family Addresses: 3,326
  • Multi-Family Addresses: 5,870
  • County: Suffolk County
  • Centroid: Latitude 42.306, Longitude -71.085
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

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02121 ZIP Code Map

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Dorchester, MA 02121 Data & Demographics (As of July 1, 2016)


Total Population 26,727
Population in Households 26,660
Population in Familes 21,651
Population in Group Qrtrs 67
Population Density1 24,048
Diversity Index2 74


Total Households 9,882
Average Household Size 2.7
Family Households 6,522
Average Family Size 3


Total Housing Units 10,914 (100%)
Owner Occupied HU 1,966 (18.0%)
Renter Occupied HU 7,916 (72.5%)
Vacant Housing Units 1,032 ( 9.5%)
Median Home Value $381,898
Average Home Value $406,193


Median Household Income $29,282
Average Household Income $45,963
Per Capita Income $17,046
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.73% 0.97%
Households 0.6% 0.88%
Families 0.51% 0.83%
Median Household Income   0.15%
Per Capita Income   1.2%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Dorchester, MA 02121 - Peer Comparisons by Rank and Percentile

The table below compares 02121 to the other 515 ZIP Codes in Massachusetts by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 77 85th
Population Density1 # 11 98th
Diversity Index2 # 40 92nd
Median Household Income # 504 2nd
Per Capita Income # 501 3rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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