Florida’s 21st Congressional District is represented by Brian J. Mast (R) in the U.S. House of Representatives. The district is one of Florida’s seats in the 435-member House of Representatives. Each congressional district represents roughly 760,000 people based on the 2020 Census, and district boundaries were most recently redrawn during the redistricting cycle following that census.
Congressional representatives serve two-year terms and face election every even-numbered year. The next election for this seat will take place on November 3, 2026.
Population
791,702
Median Household Income
$79,967
Partisan Lean
R+16
2024 presidential margin (Trump vs Harris). Source: The Downballot.
District boundary, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Brian J. Mast and Florida's 21st Congressional District
Brian J. Mast, a member of the Republican Party, represents Florida's 21st Congressional District and has held the seat since January 3, 2023. The boundary map for the district is above and the ZIP codes it covers are listed further down this page.
Committee assignments: House Committee on Transportation and Infrastructure and House Committee on Foreign Affairs.
The current term ends January 3, 2027. The seat is on the ballot on Tuesday, November 3, 2026. Washington office phone: 202-225-3026. Official site: mast.house.gov.
Current Representative
Rep. Brian J. Mast (R)
119th Congress • Republican • Representing this district since January 3, 2023 • In the House since January 3, 2017
Brian J. Mast currently represents Florida’s 21st Congressional District as a member of the Republican Party in the United States House of Representatives. The representative’s district office helps constituents with federal casework, such as Social Security claims and veterans’ benefits.
2026 Election
The Federal Election Commission has 5 candidate filings on record for the 2026 race in this district as of September 15, 2026. A filing stays on record after a candidate withdraws or loses a primary, so some names below will not be on the November 3, 2026 ballot.
- Brian Mast (Republican, incumbent)
- Alexander R Cooke (No Party Affiliation)
- James Martin (Democratic)
- Elizabeth Pandich (Democratic)
- Bernard Taylor (Democratic)
Source: Federal Election Commission filings, refreshed automatically. The FEC lists everyone who has filed to run; it does not show who won a primary. Voters can confirm registration and polling places through their state's secretary of state website.
On the ballot Tuesday, November 3, 2026
This seat is on the ballot on Tuesday, November 3, 2026. All 435 seats in the U.S. House are, because House terms run 2 years. The winner takes office on January 3, 2027.
Brian J. Mast holds the seat now and appears in the Federal Election Commission list above, so the incumbent has filed to run again.
Polling places in Florida are open 7 a.m. to 7 p.m., local time. Confirm your registration and polling place on the official federal voter page for Florida: vote.gov.
What is on the ballot nationally on November 3, 2026
Contact Your Representative
Washington Office
2182 Rayburn House Office Building
Washington, DC 20515
Phone: (202) 225-3026
Online
Committee Assignments
About This District
The district covers all of Martin and St. Lucie counties and parts of Palm Beach County in Florida. Its largest cities are Port St. Lucie (about 205,000), West Palm Beach (about 117,000), Jupiter (about 61,000), and Palm Beach Gardens (about 59,000).
Frequently Asked Questions
Who represents Florida's 21st Congressional District?
Brian J. Mast (R) represents Florida's 21st Congressional District in the U.S. House of Representatives.
What political party is Brian J. Mast a member of?
Brian J. Mast is a member of the Republican Party.
How can I contact Brian J. Mast?
You can reach Brian J. Mast by phone at 202-225-3026 or through their official website at https://mast.house.gov.
When does Brian J. Mast's current term end?
Brian J. Mast's current term in the U.S. House of Representatives ends on January 3, 2027.
Where is Florida's 21st Congressional District?
Florida's 21st Congressional District is located in the state of Florida and is one of the 435 voting congressional districts in the U.S. House of Representatives.
What district does Brian J. Mast represent?
Brian J. Mast has represented Florida's 21st Congressional District since January 3, 2023. The boundary map for the district is on this page.
Where can I see a map of Brian J. Mast's district?
The boundary map for Florida's 21st Congressional District is on this page. It is drawn from U.S. Census Bureau TIGERweb boundary files for the 119th Congress.
What committees is Brian J. Mast on?
Brian J. Mast sits on House Committee on Transportation and Infrastructure and House Committee on Foreign Affairs. Committee assignments come from the Clerk of the House MemberData file.
Is Brian J. Mast still in Congress?
This site shows Brian J. Mast holding Florida's 21st Congressional District, checked against the Clerk of the House member list. All 435 House seats are on the ballot on November 3, 2026, so the answer can change with that election.
Explore More
View all of Florida’s congressional districts or use our ZIP code lookup to find your own district.
All Florida Districts → Find Your District →This page covers Florida District 21, including its current U.S. House representative, district map, ZIP codes, and 2026 election details.
Learn more about congressional districts
- What is a congressional district?
- What does a U.S. Representative do?
- What is gerrymandering?
- How congressional redistricting works
- Mid-decade redistricting explained
- Find your congressional representative
Nearby Districts in Florida
ZIP Codes in Florida's 21st Congressional District
This congressional district contains 42 ZIP codes. The most common 10 are shown below; expand the full list to see every ZIP in the district.
17 of these ZIP codes also extend into another Florida district, so a ZIP code here does not always identify a single representative. Examples include 33403 (also in the 20th), 33404 (also in the 20th), 33407 (also in the 20th and 22nd), 33408 (also in the 20th), 33409 (also in the 20th), 33410 (also in the 20th), 33411 (also in the 20th and 22nd), 33417 (also in the 20th).
- 33403
- 33404
- 33407
- 33408
- 33409
- 33410
- 33411
- 33412
- 33417
- 33418
View all 42 ZIP codes in this district
- 33403
- 33404
- 33407
- 33408
- 33409
- 33410
- 33411
- 33412
- 33417
- 33418
- 33430
- 33438
- 33455
- 33458
- 33469
- 33470
- 33476
- 33477
- 33478
- 33493
- 34945
- 34946
- 34947
- 34949
- 34950
- 34951
- 34952
- 34953
- 34956
- 34957
- 34972
- 34974
- 34981
- 34982
- 34983
- 34984
- 34986
- 34987
- 34990
- 34994
- 34996
- 34997
ZIP-to-district boundaries sourced from the U.S. Census Bureau's 2024-07-30 Block Equivalency File for the 119th Congress. ZCTAs (ZIP Code Tabulation Areas) approximate USPS delivery ZIPs.
U.S. Senators for this state: Rick Scott (R), Ashley Moody (R)
Last updated September 3, 2026.
Data last checked September 7, 2026.
See how this district compares with another using Compare Districts.