Florida's 21st Congressional District
Florida · FL-21
Florida's 21st Congressional District is one of 28 U.S. House districts in Florida, represented in Congress by Brian Mast (Republican). It is home to roughly 783,144 people, with a median age of 47.8. The population is about 63% White. The median household income is $81,324, and 35% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted solidly Republican (R+17).
Representative
Current U.S. House member (source: house.gov).
Geography
FL-21 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 1,668 square miles, FL-21 is the 242nd-largest of the 435 congressional districts by land area. With about 470 residents per square mile, it is a mix of small cities, suburbs and countryside. Its shape is very compact: the district's Polsby-Popper score of 0.51 ranks 26th of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 41% of FL-21 voters backed Kamala Harris and 58% Donald Trump — a R+17 margin. That is a 8.0-point shift toward the Republicans from 2020, when the district voted R+9.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 47.8 years old, making this one of the oldest districts in the nation by median age; 18.4% of residents are under 18 and 26.4% are 65 or older. About 16.2% of residents were born outside the United States, and 20.8% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $81,324, the district's median household income ranks 184th of 435 districts nationwide. The typical owner-occupied home is worth $375,840, and the median rent is $1,689 a month. 10% of residents live below the poverty line, and workers average a 29.3-minute commute (13.2% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).