Texas 20th Congressional District (TX) — Elections 1876–2024

Texas 20th Congressional District: Texan Right district. In 2024, voted D+21%. Democratic peak: D+33 in 2020.

Key facts

2024 presidential margin: D+21MIT Election Lab
Political typology: Texan RightAkashic typology
Population: 296,2112024 5-year
Median household income: $72,3412024 5-year
White (non-Hispanic): 42.3%2024 5-year
Black: 7.9%2024 5-year
Hispanic / Latino: 59.7%2024 5-year
Peak Democratic margin: D+33 in 2020MIT Election Lab

DW-NOMINATE

Member ideology

CASTRO, JoaquinCongress 119 · Democratic

CASTRO scores -0.40 on the first NOMINATE dimension (−1 most liberal, +1 most conservative).

Predecessors: GONZALEZ, Charles A. (2011–2013), GONZALEZ, Charles A. (2009–2011), GONZALEZ, Charles A. (2007–2009), GONZALEZ, Charles A. (2005–2007)

Source · Voteview / Lewis, Poole, Rosenthal et al. (CC-BY).

2024 presidential election

Congressional District 20

HarrisD+21

—

How it voted

Share of the 2024 vote

Kamala Harris ✓Democratic	60.0%	147,146
Donald TrumpRepublican	38.8%	95,100
OtherAll other candidates	1.1%	2,800

D+60

R+60

1 counties, each filled by 2024 D-vs-R margin.

presidential history

Presidential margin, 2008–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
2008	+23.5%
2012	+26.2%
2016	+31.9%
2020	+33.3%
2024	+21.2%

DemocraticRepublican

5 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+21.2%	147,146	95,100	245,046
2020	D	+33.3%	172,369	85,592	260,970
2016	D	+31.9%	128,306	63,310	203,643
2012	D	+26.2%	107,061	62,569	169,630
2008	D	+23.5%	111,618	68,942	181,368

Congressional elections · 17 Senate races

U.S. Senate

Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year	Won	D %	R %	Total
2024	R	44.6%	53.1%	11,291,854
2020	R	43.9%	53.5%	11,144,040
2018	R	48.3%	50.9%	8,371,655
2014	R	34.4%	61.6%	4,648,358
2012	R	40.6%	56.5%	7,864,822
2008	R	42.8%	54.8%	7,912,075
2006	R	36.0%	61.7%	4,314,663
2002	R	43.3%	55.3%	4,514,012
2000	R	32.3%	65.1%	6,267,964
1996	R	43.9%	54.8%	5,527,441
1994	R	38.3%	60.8%	4,279,940
1990	R	37.4%	60.2%	3,822,157
1988	D	59.2%	40.0%	5,323,606
1984	R	41.4%	58.5%	5,314,178
1982	D	58.6%	40.5%	3,103,167
1978	R	49.3%	49.8%	2,312,540
1976	D	56.8%	42.2%	3,874,230

Demographics

2024 ACS

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

German

7.9%

English

5.8%

Irish

5.0%

American

3.6%

Italian

2.1%

French

1.3%

Polish

1.1%

Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

2024 ACS

Age distribution by sex

Median age: 34.8 in this county, 39.1 nationally

Male

Age

Female

0.5%

85+

0.9%

1.6%

75–84

2.1%

3.5%

65–74

4.2%

5.1%

55–64

5.4%

5.9%

45–54

6.0%

7.3%

35–44

7.1%

8.0%

25–34

7.6%

5.2%

18–24

4.9%

9.3%

5–17

9.0%

3.3%

3.1%

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Median household income

Inflation-adjusted dollars

$72,341

Congressional District 20 ranks near the middle of US counties.

Congressional District 20$72,341

Texas$78,476

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Poverty rate

All persons below federal poverty line

14.6%

Children face moderate poverty.

Children under 1819.3%

Working age (18–64)13.0%

Seniors (65+)13.3%

Source · American Community Survey 5-year estimates, 2024 release.

2024 ACS

Language at home

Population aged 5 and older

63.0%

speak English only

Spanish32.8%

Asian & Pacific Islander1.9%

Other Indo-European1.6%

Other languages0.7%

Source · ACS 5-year estimates, 2024.

2020 religion census

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

27.7%

Other Christian

13.0%

Baptist

5.1%

Pentecostal & Holiness

2.1%

Methodist

1.8%

Mainline Protestant

1.8%

Non-Christian

1.5%

Source · 2020 US Religion Census. Remaining 47.0% of residents not counted as adherents by any reporting body.

TX-20 covers the heart of San Antonio and returned an 18.6-point Democratic margin in 2024, reflecting a majority-Hispanic electorate concentrated in one of Texas's largest urban cores.

Across the recorded series it reached a Democratic high of thirty-three points in 2020. Between 2020 and 2024 the district moved twelve points toward the Republican candidate; the 2024 margin was twenty-one points.

A population of 296,211, a 42% non-Hispanic-white share, and a median household income of $72,341 describe the district.

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Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Congressional District 20, Texas. Akashic. https://akashic.app/cd/4820/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Congressional District 20, Texas vote in 2024?

In 2024, Congressional District 20, Texas voted Democratic by 21.2 points (D+21), carried by the Democratic candidate. Out of 245,046 votes cast, 147,146 went Democratic and 95,100 went Republican.

What is Congressional District 20, Texas's political typology?

Akashic places Congressional District 20, Texas in the "Texan Right" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 5 elections in the dataset, the district has voted Democratic 5 times, Republican 0 times, and other 0 times.

How many people live in Congressional District 20, Texas?

Congressional District 20, Texas has a population of 296,211 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Congressional District 20, Texas?

Median household income in Congressional District 20, Texas is $72,341 — below the national median of $80,734. The Texas state median is $78,476.

What is the political history of Congressional District 20, Texas?

Akashic tracks 5 presidential elections in Congressional District 20, Texas from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican. The district's typology — "Texan Right" — captures where that record, its demographics, and its recent swing place it among American communities.

Texas 20th Congressional District moved 12 points toward the Republican candidate between 2020 and 2024.

Key facts

U.S. Senate

Demographics

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Frequently asked questions