Williamstown, MA Profile: Facts, Map & Data


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Williamstown, Massachusetts - Basic Facts

The Williamstown Census Designated Place had a population of 4,127 as of July 1, 2017. Williamstown ranks in the upper quartile for 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 Williamstown is located at latitude 42.7089 and longitude -73.2014 in Berkshire County. The formal boundaries for the Williamstown Census Designated Place (see map below) encompass a land area of 3.39 sq. miles and a water area of 0.03 sq. miles. Berkshire County is in the Eastern time zone (GMT -5). The elevation is 682 feet.

The Williamstown Census Designated Place (GNIS ID: 2378046) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Williamstown Census Designated Place is located within Town of Williamstown, a minor civil division (MCD) of Berkshire County.

Beneath the boundary map are tables with Williamstown 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 Williamstown: Willimston.

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Williamstown Census Designated Place, MA Boundary Map

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


Total Population 4,127
Daytime Population: Workers 2,915
Daytime Population: Residents 2,224
Total Daytime Population (TDP) 5,139
Ratio TDP/Total Population1 1.25
Population in Households 2,256
Population in Familes 1,533
Population in Group Qrtrs 1,871
Population Density2 1,216
Diversity Index3 45


Median Household Income $71,418
Average Household Income $109,799
Per Capita Income $39,511


Total Housing Units 1,488 (100%)
Owner Occupied HU 721 (48.5%)
Renter Occupied HU 437 (29.4%)
Vacant Housing Units 330 (22.2%)
Median Home Value $395,089
Average Home Value $454,646


Total Households 1,158
Average Household Size 1.95
Family Households 599
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 -0.64% -0.25%
Households -1.01% -0.49%
Families -0.76% -0.57%
Median Household Income   3.18%
Per Capita Income   1.86%

Williamstown, MA - Peer Comparisons by Rank and Percentile

The table below compares Williamstown 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 # 132 47th
Population Density # 142 43rd
Diversity Index # 45 82nd
Median Household Income # 124 50th
Per Capita Income # 117 53rd

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

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