Williamsville Population

1870–2026

5,491

2026 projection

1.7% since 2020 (increase)

01K2K3K4K5K6K7K18801900192019401960198020002020

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 Williamsville. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20265,491+130.24%
20255,478+250.46%
20245,453+120.22%
20235,441-280.51%
20225,469+841.56%
20215,385-130.24%
20205,398+2063.97%
20195,192-170.33%
20185,209-150.29%
20175,224+140.27%

Showing 10 of 30 years.

Williamsville Demographics

49.2median age

Median age

Female52.9 yrs
Male43.8 yrs

Adults

4,546
1,693 seniors · 37%2,853 other adults

Sex

Female 49.9% · 2,730Male 50.1% · 2,739

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 55 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

Williamsville Income

$98,850median household income

Median household income

$98,850

Half of households earn more, half earn less

Median earnings

$61,470

Typical yearly pay for a worker 25 or older.

Poverty rate

5.9%

About 1 in 17 residents

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

Williamsville Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%52%44%
Never married28%30%27%
Divorced13%12%14%
Widowed10%5%13%
Separated2%2%2%

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