Boston, MA Profile: Facts, Map & Data


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Boston, Massachusetts - Basic Facts

The City of Boston is the largest city in Massachusetts with a population of 661,977 as of July 1, 2017. Boston ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Massachusetts. See peer rankings below.

The primary coordinate point for Boston is located at latitude 42.332 and longitude -71.0202 in Suffolk County. The formal boundaries for the City of Boston (see map below) encompass a land area of 48.37 sq. miles and a water area of 41.28 sq. miles. Suffolk County is in the Eastern time zone (GMT -5). The elevation is 46 feet.

The City of Boston (GNIS ID: 619463) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Boston population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Boston: Baston, Mushauwomuk, Old Boston, Shawmut, Shawmutt, Shawnnut, Totant, Tramount, Tremont, Trimountain, Trimountaine, WahstoronĂ²n:ke, Wastok.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


City of Boston, MA Boundary Map

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


Total Population 661,977
Daytime Population: Workers 635,590
Daytime Population: Residents 306,149
Total Daytime Population (TDP) 941,739
Ratio TDP/Total Population1 1.42
Population in Households 612,853
Population in Familes 380,675
Population in Group Qrtrs 49,124
Population Density2 13,687
Diversity Index3 78


Median Household Income $56,014
Average Household Income $88,885
Per Capita Income $37,084


Total Housing Units 289,485 (100%)
Owner Occupied HU 85,916 (29.7%)
Renter Occupied HU 183,399 (63.4%)
Vacant Housing Units 20,170 ( 7.0%)
Median Home Value $431,204
Average Home Value $512,126


Total Households 269,315
Average Household Size 2.28
Family Households 122,890
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 0.96% 0.93%
Households 0.88% 0.95%
Families 0.77% 0.88%
Median Household Income   2.76%
Per Capita Income   3.03%

Boston, MA - Peer Comparisons by Rank and Percentile

The table below compares Boston to the other 246 incorporated cities, towns and CDPs 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 # 1 100th
Population Density # 4 99th
Diversity Index # 7 98th
Median Household Income # 184 26th
Per Capita Income # 136 45th

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

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