Old Westbury

County:: Nassau County
County Seat:: No
Area (mi²):: 8.572
State:: New York

Old Westbury is a village located in Nassau County, New York. Old Westbury has a 2025 population of 5,192. Old Westbury is currently growing at a rate of 3.59% annually and its population has increased by 20.91% since the most recent census, which recorded a population of 4,294 in 2020.

The average household income in Old Westbury is $441,391 with a poverty rate of 5%. The median age in Old Westbury is 28.7 years: 37.3 years for males, and 27.2 years for females.

Demographics

The racial composition of Old Westbury includes 71.25% White, 13.63% Asian, 7.13% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Black or African American

Two or more races

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,078	71.25%
Asian	589	13.63%
Black or African American	308	7.13%
Two or more races	276	6.39%
Other race	69	1.6%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Old Westbury Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Old Westbury's average per capita income is $108,359. Household income levels show a median of $250,001. The poverty rate stands at 5%.

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
Households	$250,001	$441,391
Families	$250,001	$461,568
Married Families	$250,001	-
Non Families	$250,001	$345,218

$108,359

Average Income

$250,001

Median Household Income

5%

Poverty Rate