Greater Williamstown, The Berkshires, MA demographics:
population, income, and more

Total population
7,530
20.6% year-over-year change
Median household income
$106,375/yr
7.7% year-over-year change
Housing units
3,174
18.0% year-over-year change

Williamstown population

How many people live in Williamstown

Williamstown is home to 7,530 residents, according to the most recent Census data. Gender-wise, 45.5% of Williamstown locals are male, and 54.5% are female.

Total population
7,530
20.6% year-over-year change
Gender ratio
Male
45.5%
3,428
Female
54.5%
4,102
Value Percent YoY change
Male 3,428 45.5% 23.2%
Female 4,102 54.5% 18.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Williamstown is 38, with the population distributed as follows: about 11.9% are children under 15, then 30.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 13.5% of the population, while another 19.6% fall into the 45 to 64 bracket. Finally, around 24.2% are 65 or older.

Median age
38
Age breakdown
Under 15
11.9%
15 to 24
30.7%
25 to 44
13.5%
45 to 64
19.6%
Over 65
24.2%
Value Percent YoY change
Under 15 897 11.9% 31.5%
15 to 24 2,315 30.7% 10.7%
25 to 44 1,019 13.5% 20.6%
45 to 64 1,474 19.6% 25.4%
Over 65 1,825 24.2% 26.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Williamstown, 90% of the population are US-born citizens, while 5.2% have gained naturalized citizenship. At the same time, 4.8% of residents are non-citizens. As for race, 80.8% of locals are Caucasian, 3.5% are African American and 6% have Asian roots. There’s also a share of 7.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
90%
Non-U.S.-born citizens
5.2%
Non-citizens
4.8%
Value Percent YoY change
U.S.-born citizens 6,781 90% 19.7%
Non-U.S.-born citizens 388 5.2% 25.2%
Non-citizens 361 4.8% 35.2%
Racial breakdown
White
80.8%
Black or African American
3.5%
American Indian and Alaska Native
0%
Asian
6%
Native Hawaiian and other Pacific Islander
0.3%
Two or more races
7.1%
Other
2.4%
Value Percent
White 6,081 80.8%
Black or African American 263 3.5%
American Indian and Alaska Native 2 0%
Asian 449 6%
Native Hawaiian and other Pacific Islander 23 0.3%
Two or more races 532 7.1%
Other 181 2.4%

Households in Williamstown

A peek inside Williamstown households

Williamstown has 2,677 households, with an average of 2 members in each. Of these, 56.4% are families, while the remaining 43.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
2,677
25.7% year-over-year change
Average people per household
2
Non-family households
1,168
Family households
1,509
Value Percent YoY change
Non-family households 1,168 43.6% 32.0%
Family households 1,509 56.4% 21.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Williamstown

The housing landscape of Williamstown

Williamstown's housing consists of 3,174 units, with 70.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 4.7% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 1.4% of the housing landscape.

Housing units
3,174
18.0% year-over-year change
Housing types
Value Percent
1 unit, detached 2,230 70.2%
1 unit, attached 148 4.7%
2 units 121 3.8%
3 or 4 units 236 7.4%
5 to 9 units 131 4.1%
10 to 19 units 167 5.3%
20 to 49 units 54 1.7%
50 or more units 44 1.4%
Mobile home 44 1.4%
Homes built since 2020
67
148.2% year-over-year change

The age of buildings in Williamstown

In Williamstown, the median construction year is 1961. About 30.4% of homes were built before the 1940s, with another 6% going up by 1949. Most development happened in the second half of the 20th century. Then, 4.2% of homes were added from 2000 to 2009, 4% between 2010 and 2019, and 2.1% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 966 30.4% 0.9%
Built between 1940 and 1949 189 6% 19.6%
Built between 1950 and 1959 394 12.4% 23.5%
Built between 1960 and 1969 390 12.3% 29.6%
Built between 1970 and 1979 381 12% 51.2%
Built between 1980 and 1989 274 8.6% 15.6%
Built between 1990 and 1999 252 7.9% 20.0%
Built between 2000 and 2009 132 4.2% 1.5%
Built between 2010 and 2019 128 4% 30.6%
Built in 2020 or later 67 2.1% 148.2%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Williamstown occupancy rates

Out of the 2,677 occupied housing units in Williamstown, 74.6% are owner-occupied, while 25.4% are lived in by tenants. Meanwhile, 15.7% of all homes on the local market sit vacant.

Occupied housing units
2,677
25.7% year-over-year change
Occupancy breakdown
Renter occupied
680
Owner occupied
1,997
Value Percent YoY
change
Renter occupied 680 25.4% 20.6%
Owner occupied 1,997 74.6% 27.6%
Unoccupied housing units
15.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Williamstown housing costs

Housing costs in Williamstown come to a median of $1,582 per month, while tenants specifically pay a median gross rent of $1,582.

Median housing costs per month
$1,582/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Williamstown
$1,582/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Williamstown

Williamstown education at a glance

About 14.4% of the population in Williamstown went to high school, while 34.3% pursued college studies. Another 3.5% earned an associate degree and 16.4% hold a bachelor’s. Meanwhile, 31% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 27 0.4% 28.6%
High school diploma 914 14.4% 23.0%
College diploma 2,175 34.3% 8.6%
Associate degree 223 3.5% 31.2%
Bachelor's degree 1,039 16.4% 22.1%
Graduate degree 1,964 31% 33.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Williamstown

How much people earn in Williamstown

The average annual household income in Williamstown was $147,054 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +5.6% change from the previous year. At the same time, the median income stood at $106,375, reflecting a +7.7% shift over the same period.

Average household income in Williamstown
$147,054/year
5.7% year-over-year change
Median household income in Williamstown
$106,375/year
7.7% year-over-year change

Williamstown income by age

In Williamstown, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $128,182. Those with someone between 45 and 64 in charge, often well established professionally, earn $126,875 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $25,366, while those led by someone over 65, many of whom may be retired, have about $79,444 in earnings. Overall, 89.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $25,366 0.9%
25 - 44 $128,182 -7.1%
45 - 64 $126,875 -0.5%
Over 65 $79,444 9.1%
Above poverty level
5,107
Below poverty level
612
Value Percent YoY
change
Above poverty level 5,107 89.3% 27.9%
Below poverty level 612 10.7% 33.0%

Employment in Williamstown

Workforce and job types in Williamstown

92.8% of the working population are employed in professional or administrative positions, while 7.2% are in hands-on or service-based jobs. Also, 12.2% run their own businesses, 36.2% are employed by private companies, and 11.8% work in the public sector.

Workforce demographics

White collar
3,399
Blue collar
263
Value Percent YoY change
White collar 3,399 92.8% 17.5%
Blue collar 263 7.2% 37.7%
Employer type
Self employees
12.2%
Private companies
36.2%
Governmental workers
11.8%
Not for profit companies
39.8%
Value Percent YoY change
Self employees 446 12.2% 33.1%
Private companies 1,326 36.2% 27.4%
Governmental workers 430 11.8% 47.3%
Not for profit companies 1,459 39.8% 3.2%

Transportation in Williamstown

How people get around in Williamstown

In Williamstown, the average commute time is 13 minutes. Commuting methods vary: 64.9% of residents travel by personal vehicle and 32% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
13 min
Means of transportation
Value Percent YoY change
Car 1,618 64.9% 29.6%
Bicycle 77 3.1% 156.7%
Walk 798 32% -10.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Williamstown by zipcode?

Zipcode Population Number of households Median income Average income
01267 9,633 3,425 $106,375 $147,252

Explore more communities

FAQs about Williamstown demographics 

What is the total population of Williamstown?

Williamstown has a total population of 7,530 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +20.6% compared to a year ago.

What is the gender ratio in Williamstown?

The gender ratio in Williamstown is as follows:
  • 45.5% males (3,428 residents)
  • 54.5% females (4,102 residents)

What is the median age in Williamstown?

The median age in Williamstown is 38.

What is the age distribution of the population in Williamstown?

The age distribution in Williamstown is as follows:
  • Under 15: 11.9% (897 residents)
  • Ages 15-24: 30.7% (2,315 residents)
  • Ages 25-44: 13.5% (1,019 residents)
  • Ages 45-64: 19.6% (1,474 residents)
  • Over 65: 24.2% (1,825 residents)

What is the racial and ethnic makeup of Williamstown?

The racial and ethnic makeup of Williamstown is as follows:
  • White: 80.8% (6,081 residents)
  • Black or African American: 3.5% (263 residents)
  • American Indian and Alaska Native: 0% (2 residents)
  • Asian: 6% (449 residents)
  • Native Hawaiian and Other Pacific Islander: 0.3% (23 residents)
  • Two or More Races: 7.1% (532 residents)
  • Other: 2.4% (181 residents)

What percentage of the population in Williamstown are U.S.-born citizens?

U.S.-born citizens represent 90% of the population in Williamstown.

How many housing units are there in Williamstown?

There are 3,174 housing units in Williamstown, reflecting a +18.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Williamstown and what is the average household size?

Williamstown has a total of 2,677 households, with an average of 2 people in each.

What is the median household income in Williamstown?

Williamstown has a median household income of $106,375, representing a +7.7% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Williamstown?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 92.8% (3,399 residents)
  • Blue-collar workers: 7.2% (263 residents)

Places of employment:
  • Self-employed: 12.2% (446 residents)
  • Private companies: 36.2% (1,326 residents)
  • Governmental workers: 11.8% (430 residents)
  • Not-for-profit companies: 39.8% (1,459 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025