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Texas's 20th Congressional District (TX-20)

Last updated · 6 sources

Joaquin Castro, a Democrat, has represented the district since 2013.

The district includes part of Bexar County.

According to the Census Bureau's 2020–2024 American Community Survey 5-year estimates, the district has a population of 783,289, a median household income of $62,770, and a median age of 33.2. Of residents 25 and older, 25.2% hold a bachelor's degree or higher.

Representative

Official portrait of Joaquin Castro, U.S. Representative for Texas's 20th District
Joaquin Castro

U.S. Representative for Texas's 20th District · Democrat

ProfileSchedule this week

2026 redistricting

Texas uses a new congressional map in 2026: PLANC2333 (HB 4), enacted Aug 29, 2025.

The 2026 election for TX-20 uses the new map's TX-20; the map on this page shows the district as currently drawn (119th Congress).

Source · All 2026 redistricting changes

2026 election

Castro has filed with the FEC to run for this seat in 2026. 2 candidates for the seat have reported receipts to the FEC.

2 candidates have reported raising money for the 2026 TX-20 race to the FEC.

Election Day: Tuesday, November 3, 2026

Candidates for TX-20 in 2026 who reported raising money to the FEC
CandidatePartyRaisedCash on handThrough
Joaquin Castro (incumbent)Democratic$514,776$154,380Jun 30
Edgardo Rafael BaezRepublican$48,536$21,462Jun 30

Includes primary candidates; FEC filings do not record primary results. FEC race page

District profile

Population
783,289
Median household income
$62,770
Median age
33.2
Bachelor's degree or higher
25.2%

Census Bureau, 2020–2024 American Community Survey 5-year estimates

Texas senators

Neighboring districts

Sources