Olympia Heights is a census-designated place located in the U.S. state of Florida. It is within Miami-Dade County at the junction of County Road 349 in Branford to the north. It has a total area of 3 square miles at 25°43′35″N 80°20′42″W. The elevation is 7 feet above sea level. As of the 2000 census data, it had a total population of 13,452. The population density was 4,484/sq mi. Education in Olympia Heights is provided by Miami-Dade County Public Schools.