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, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

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