In 2018, Hialeah, FL had a population of 237k people with a median age of 44.3 and a median household income of $33,161. Between 2017 and 2018 the population of Hialeah, FL declined from 237,523 to 237,285, a -0.1% decrease and its median household income grew from $31,012 to $33,161, a 6.93% increase. The 5 largest ethnic groups in Hialeah, FL are White (Hispanic) (90%), Other (Hispanic) (3.64%), White (Non-Hispanic) (2.67%), Black or African American (Hispanic) (1.88%), and Black or African American (Non-Hispanic) (0.636%). NaNk% of the people in Hialeah, FL speak a non-English language, and 65.8% are U.S. citizens.