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

Texas 20th Congressional District, Texas: Democratic loyalist district. In 2024, voted D+10%. Democratic peak: D+66 in 1932.

Key facts

2024 presidential margin: D+10MIT Election Lab
Political archetype: Democratic loyalistAkashic 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+66 in 1932MIT Election Lab
Peak Republican margin: R+20 in 1972MIT Election Lab

CASTRO, JoaquinCongress 119 · Democratic

−1 liberal

+1 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 results by constituent county

1 counties · 1 D · 0 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+9.7%	58,944	48,364	108,960
2020	D	+18.1%	64,255	44,219	110,408
2016	D	+13.3%	45,785	34,435	85,191
2012	D	+4.5%	37,949	34,619	73,748
2008	D	+5.6%	39,478	35,287	75,325
2004	R	−10.5%	30,229	37,353	68,103
2000	R	−7.4%	26,530	30,893	59,136
1996	D	+5.2%	25,835	23,157	51,938
1992	D	+0.9%	24,718	24,188	59,501
1988	R	−5.2%	24,936	27,681	52,978
1984	R	−19.5%	19,622	29,132	48,834
1980	R	−7.1%	19,734	22,864	44,198
1976	D	+9.4%	21,002	17,362	38,891
1972	R	−19.9%	13,133	19,711	32,982
1968	D	+12.1%	13,658	10,452	26,489
1964	D	+34.0%	15,569	7,661	23,286
1960	D	+8.2%	10,800	9,161	20,094
1956	R	−16.9%	6,704	9,442	16,238
1952	R	−13.0%	7,201	9,369	16,640
1948	D	+14.7%	5,154	3,754	9,497
1944	D	+18.9%	5,018	3,380	8,658
1940	D	+35.2%	5,475	2,618	8,123
1936	D	+46.6%	5,127	1,856	7,018
1932	D	+66.4%	5,411	1,070	6,533
1928	D	+0.4%	2,382	2,361	4,751
1924	D	+3.8%	1,553	1,418	3,539
1920	R	−11.5%	992	1,274	2,442
1916	D	+12.0%	1,004	786	1,822
1912	D	+44.2%	697	146	1,246
1908	—	No data	—	—	—
1904	—	No data	—	—	—
1900	—	No data	—	—	—
1896	—	No data	—	—	—
1892	—	No data	—	—	—
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

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

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.

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.

Median household income

2024 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.

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.

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.

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.

The Democratic margin in Texas 20th Congressional District reached its widest at sixty-six points in 1932. The margin in 2024 was ten points — still decisive.

Its loyalty is rooted in its place. Median household income of $72,341, a 42% non-Hispanic-white share, and a population of 296,211 together describe a district whose political habits are deeply settled.

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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 9.7 points (D+10), carried by the Democratic candidate. Out of 108,960 votes cast, 58,944 went Democratic and 48,364 went Republican.

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

Akashic classifies Congressional District 20, Texas as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 20 times, Republican 9 times, and other 0 times.

When did Congressional District 20, Texas last vote Republican?

The most recent presidential election in which Congressional District 20, Texas voted Republican was 2004.

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 38 presidential elections in Congressional District 20, Texas from 1876 to 2024. Of those, 20 went Democratic and 9 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

Texas 20th Congressional District delivered D+10 in 2024 — Democratic for decades.

Key facts

U.S. Senate

Demographics

Compare two places, side by side

Frequently asked questions