The Incorporated Village of Hewlett Bay Park is located within the Town of Hempstead.
Hewlett Bay Park ranks at number 18 on the list of Highest-income places in the United States.
Hewlett is usually included as one of the Five Towns in the southwestern corner of Nassau County. In the context of the Five Towns, "The Hewletts" or "Hewlett" is often used to refer collectively to the hamlet of Hewlett, together with the villages of Hewlett Bay Park, Hewlett Harbor and Hewlett Neck. The Five Towns is usually said to comprise the villages of Lawrence and Cedarhurst, the hamlets of Woodmere and Inwood, and "The Hewletts", along with Woodsburgh.