Suffolk County MA Information


Suffolk County Subdivisions

Suffolk County MA Data & Demographics (As of July 1, 2017)


Total Population 774,572
Daytime Population: Workers 666,978
Daytime Population: Residents 360,873
Total Daytime Population (TDP) 1,027,851
Ratio TDP/Total Population1 1.33
Population in Households 724,371
Population in Familes 465,021
Population in Group Qrtrs 50,201
Population Density2 13,319
Diversity Index3 78


Median Household Income $55,510
Average Household Income $86,371
Per Capita Income $35,596


Total Housing Units 334,885 (100%)
Owner Occupied HU 103,427 (30.9%)
Renter Occupied HU 208,470 (62.3%)
Vacant Housing Units 22,988 ( 6.9%)
Median Home Value $410,999
Average Home Value $487,925


Total Households 311,897
Average Household Size 2.32
Family Households 148,478
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.97% 0.95%
Households 0.88% 0.94%
Families 0.77% 0.88%
Median Household Income   2.54%
Per Capita Income   2.99%


Suffolk County MA - Peer Comparisons by Rank and Percentile

The table below compares Suffolk County to the other 14 counties and county equivalents in Massachusetts by rank and percentile using July 1, 2017 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 # 4 79th
Population Density # 1 100th
Diversity Index # 1 100th
Median Household Income # 11 29th
Per Capita Income # 8 50th

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