The Westbury Union Free School District is a school district that serves the town of Westbury, located in Nassau County, New York.

[1] During the 2022-2023 school year, the total staff (FTE) was 710.71.

Additionally, the district staffed 117.00 instructional aids.

[14] During the 2022-2023 school year, the district had enrolled a total of 4,768 students.

According to fiscal data from 2020-2021, the district's total revenue was $154,587,000.