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The Williamstown CDP⁽¹⁾ had a population of 5,070 as of 2020-2024 American Community Survey 5-Year Estimates. 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 42.712 and longitude -73.2037 in Berkshire County. The formal boundaries for the Williamstown Census Designated Place 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 Williamstown Census Designated Place 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.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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Williamstown Demographic Data
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Williamstown, MA Data & Demographics

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

POPULATION
Total Population	5,070 (100%)
Population Density	1,492 per sq mi
Diversity Index¹	47


INCOME
Median Household Income	$97,917
Per Capita Income	$49,390
Median Home Value	$439,300

HOUSING
Total HU (Housing Units)	1,754 (100%)
Owner Occupied HU	944 (53.8%)
Renter Occupied HU	590 (33.6%)
Vacant Housing Units	220 (12.5%)

HOUSEHOLDS
Total Households	1,534
Average Household Size	1.98
Family Households	678 (44.2%)

NOTES

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).

Williamstown, MA - Peer Comparisons by Rank and Percentile

The table below compares Williamstown 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	# 123	51st
Population Density	# 120	52nd
Median Household Income	# 133	47th
Per Capita Income	# 164	34th
Diversity Index	# 52	79th

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

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Williamstown, MA Profile: Facts & Data

Williamstown, Massachusetts - Basic Facts

Williamstown, MA Data & Demographics

POPULATION

INCOME

HOUSING

HOUSEHOLDS

Williamstown, MA - Peer Comparisons by Rank and Percentile

Williamstown, MA - Most Popular Things to Do

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