In 2018, Surfside, FL had a population of 5.82k people with a median age of 44 and a median household income of $86,088. Between 2017 and 2018 the population of Surfside, FL declined from 5,844 to 5,817, a -0.462% decrease and its median household income grew from $73,241 to $86,088, a 17.5% increase. The 5 largest ethnic groups in Surfside, FL are White (Non-Hispanic) (55.9%), White (Hispanic) (32.3%), Other (Hispanic) (10.2%), Asian (Non-Hispanic) (0.705%), and Other (Non-Hispanic) (0.499%). NaNk% of the people in Surfside, FL speak a non-English language, and 89% are U.S. citizens.