Williamstown Population

1860–2026

2,910

2026 projection

2.6% since 2020 (decrease)

01K2K3K4K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Williamstown. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20262,910-120.41%
20252,922-210.71%
20242,943-90.30%
20232,952-120.40%
20222,964-150.50%
20212,979-90.30%
20202,988+1174.08%
20192,871-190.66%
20182,890-260.89%
20172,916-250.85%

Showing 10 of 31 years.

Williamstown Demographics

52.1median age

Median age

Female52.1 yrs
Male49.5 yrs

Adults

2,480
818 seniors · 33%1,662 other adults

Sex

Female 49.8% · 1,483Male 50.2% · 1,497

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 30 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Williamstown Income

$89,013median household income

Median household income

$89,013

Half of households earn more, half earn less

Median earnings

$47,772

Typical yearly pay for a worker 25 or older.

Poverty rate

5.2%

About 1 in 19 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Williamstown Marital Status

67% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married67%67%66%
Never married21%25%16%
Divorced8%5%11%
Widowed5%3%6%
Separated<1%0%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201