Williamsville

County:: Erie County
County Seat:: No
Area (mi²):: 1.258
State:: New York

Williamsville is a village located in Erie County, New York. Williamsville has a 2025 population of 5,488. Williamsville is currently growing at a rate of 0.27% annually and its population has increased by 1.39% since the most recent census, which recorded a population of 5,413 in 2020.

The average household income in Williamsville is $116,603 with a poverty rate of 5.46%.The median age in Williamsville is 49.7 years: 46 years for males, and 52.6 years for females.

Demographics

The racial composition of Williamsville includes 91.23% White, and smaller percentages for Black or African American, Asian, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	4,954	91.23%
Two or more races	358	6.59%
Black or African American	70	1.29%
Asian	45	0.83%
Other race	3	0.06%

Williamsville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Williamsville's average per capita income is $59,567. Household income levels show a median of $106,250. The poverty rate stands at 5.46%.

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	$148,929	-
Families	$129,230	$151,528
Households	$106,250	$116,603
Non Families	$71,939	$77,676

$59,567

Average Income

$106,250

Median Household Income

5.46%

Poverty Rate