Westbury is located in southeast New York. Westbury is part of Nassau County. Westbury has 2.37 square miles of land area and has no water area. As of 2010-2014, the total Westbury population is 15,201, which has grown 6.58% since 2000. The population growth rate is higher than the state average rate of 3.26% and is much lower than the national average rate of 11.61%. Westbury median household income is $85,086 in 2010-2014 and has grown by 14.93% since 2000. The income growth rate is much lower than the state average rate of 35.25% and is much lower than the national average rate of 27.36%. Westbury median house value is $419,200 in 2010-2014 and has grown by 86.98% since 2000. The house value growth rate is about the same as the state average rate of 90.79% and is much higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Westbury is close to the state average in quality. The Westbury area code is 516.