Miami Beach is on the west coast of the United States.
Florida . It is bordered to the west by the Gulf of Mexico , to the north by Alabama and Georgia , to the east by the Atlantic Ocean , and to the south by the Straits of Florida and Cuba . Miami Beach, Florida . The neighborhood of South Beach , comprising the southernmost 2.5 mi2 of Miami Beach , along with downtown Miami and the Port of Miami , collectively form the commercial center of South Florida .