Somerville, MA Profile: Facts & Data

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Somerville, Massachusetts - Basic Facts

The City of Somerville had a population of 81,036 as of 2020-2024 American Community Survey 5-Year Estimates. Somerville 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 Somerville is located at latitude 42.3876 and longitude -71.0995 in Middlesex County. The formal boundaries for the City of Somerville encompass a land area of 4.12 sq. miles and a water area of 0.1 sq. miles. Middlesex County is in the Eastern time zone (GMT -5).

The City of Somerville 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.


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  1. Somerville Demographic Data
  2. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Massachusetts Research Tools (Easy Tools & Current Data)
  3. Massachusetts Data Comparison Tool
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Somerville, MA Data & Demographics

Source: 2020-2024 American Community Survey 5-Year Estimates

POPULATION

Total Population 81,036 (100%)
Population Density 19,668 per sq mi
Diversity Index1 54
 
 

INCOME

Median Household Income $132,572
Per Capita Income $73,940
Median Home Value $911,300
 

HOUSING

Total HU (Housing Units) 37,756 (100%)
Owner Occupied HU 12,232 (32.4%)
Renter Occupied HU 23,483 (62.2%)
Vacant Housing Units 2,041 (5.4%)
 

HOUSEHOLDS

Total Households 35,715
Average Household Size 2.19
Family Households 13,327 (37.3%)
NOTES
  1. The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).

Somerville, MA - Peer Comparisons by Rank and Percentile

The table below compares Somerville to the other 248 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates 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 # 13 95th
Population Density # 1 100th
Median Household Income # 59 77th
Per Capita Income # 48 81st
Diversity Index # 30 88th

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

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