Texas's 20th Congressional District is represented by Joaquin Castro (Democrat), who has held the seat since 2013. Castro has an overall VoteSee report card grade of F, voted in 97% of roll-call votes on bills this Congress, and votes with the Democratic majority 97% of the time. The district includes San Antonio, Leon Valley, and Balcones Heights. It covers part of Bexar County. About 783,000 people live in the district, and the median household income is $62,770.
Joaquin Castro (Democrat) has represented Texas's 20th Congressional District since 2013.
See Joaquin Castro's full voting record and issue positions →
Winner: Joaquin Castro.
Incumbent Joaquin Castro is running for re-election. 2 candidates were on the Nov 3, 2026 ballot.
Polls: No public polls
Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.
Members of Congress who previously represented Texas's 20th Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.
Texas's 20th Congressional District covers 179 square miles of land. Boundaries are for the current (119th) Congress.