Surfside is a town in Miami-Dade County, Florida, United States. As of 2010, the population recorded by the U.S. Census Bureau is 5,744. According to the United States Census Bureau, the town has a total area of 2.5 km2 (1.0 sq mi). 1.3 km2 (0.5 sq mi) of it is land and 1.2 km2 (0.5 sq mi) of it (47.42%) is water.
As of 2000, Spanish was spoken as a first language by 49.41% of residents, while English was spoken by 42.11% of the population. Other languages spoken included Portuguese 2.36%, Russian 2.04%, German and Yiddish were both tied at 1.40%, and French was the mother tongue for 1.29% of the populace.