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 and multiracial populations.

Population by Race

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%

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