The City of St. Augustine Beach was incorporated in 1959, with a land area of 2.5 square miles. Lying approximately five miles southeast of the City of St. Augustine, St. Augustine Beach's boundaries are the Atlantic Ocean, the west right-of-way of SR-A1A, the north right-of-way of Pope Road, and Sandpiper Village subdivision to the south.

St. Augustine Beach has a commission/manager form of government. The Board of Commissioners has five members elected at large in non-partisan elections for staggered terms of four years each. The City Commission has a regular meeting on the first Monday of every month at 7:00 p.m. in the City Hall at 2200 A1A South. Copies of the agenda are available at the City Manager's office the week before the regular meeting, or online under the meetings menu.

The City of St. Augustine Beach provides the following services: Law Enforcement, Planning and Zoning, Code Enforcement, Building Inspection, Solid Waste Collection, Road and Right-Of-Way maintenance, maintenance of city property, drainage and storm water management, and street lighting.