Williamstown

County:: Berkshire County
County Seat:: No
Area (mi²):: 3.398
State:: Massachusetts

Williamstown is a CDP located in Berkshire County, Massachusetts. Williamstown has a 2025 population of 4,541. Williamstown is currently growing at a rate of 0.31% annually but its population has decreased by -0.53% since the most recent census, which recorded a population of 4,565 in 2020.

The average household income in Williamstown is $152,944 with a poverty rate of 15.88%.The median age in Williamstown is 21.9 years: 21.7 years for males, and 22 years for females.

Demographics

The racial composition of Williamstown includes 76.36% White, 7.24% Asian, 4.37% Black or African American, and smaller percentages for other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,323	76.36%
Two or more races	429	9.86%
Asian	315	7.24%
Black or African American	190	4.37%
Other race	95	2.18%

Williamstown Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williamstown's average per capita income is $84,917. Household income levels show a median of $82,917. The poverty rate stands at 15.88%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$232,727	-
Families	$158,472	$253,269
Households	$82,917	$152,944
Non Families	$28,750	$64,527

$84,917

Average Income

$82,917

Median Household Income

15.88%

Poverty Rate