Old Westbury is a city located in New York. With a 2020 population of 4,768, it is the 174th largest city in New York and the 4890th largest city in the United States. Old Westbury is currently growing at a rate of 0.21% annually and its population has increased by 2.08% since the most recent census, which recorded a population of 4,671 in 2010. Spanning over 9 miles, Old Westbury has a population density of 556 people per square mile.
The average household income in Old Westbury is $357,564 with a poverty rate of 1.99%. The median rental costs in recent years comes to $1,327 per month, and the median house value is $1.96 Mn. The median age in Old Westbury is 24.2 years, 31.2 years for males, and 22.8 years for females. For every 100 females there are 89.4 males.