Cost of living in Old Westbury, New York

Old Westbury, New York has about 4,241 people. That count is a 2020–2024 Census average, not a headcount from one day.

A typical home is worth about $2,000,001.

HUD's fair-market rent for a 2-bedroom in Nassau County is $2,689 a month. That is the county number, not an apartment listing in Old Westbury. It runs from October 2026 through September 2027.

In the New York-Newark-Jersey City, NY-NJ metro area, prices sit at 112.6 when the U.S. average is 100. That is a 2024 BEA index.

New York taxes wages. A typical combined sales tax is 8.5% as of January 1, 2026. That mix is statewide, not Old Westbury's exact store tax.

Some places in New York add a local wage tax. In 2023 the state average was about 1.60% of income. That is not a Old Westbury bill.

In July 2026, a typical New York home paid 29.90¢ per kilowatt-hour. That is a state average from EIA, not Old Westbury's bill.

In 2025, all-grades gas in New York averaged $3.18 a gallon. EIA prints this yearly price for only some states.

Among 745 places we list in New York with a rent figure, 0 have higher typical rent than Old Westbury.