Texas 21st Congressional District (TX) — Elections 1876–2024

Texas 21st Congressional District, Texas: Republican loyalist district. In 2024, voted R+18%. Democratic peak: D+65 in 1932.

Key facts

2024 presidential margin: R+18MIT Election Lab
Political archetype: Republican loyalistAkashic typology
Population: 854,9422024 5-year
Median household income: $87,2522024 5-year
White (non-Hispanic): 60.5%2024 5-year
Black: 4.6%2024 5-year
Hispanic / Latino: 39.2%2024 5-year
Peak Democratic margin: D+65 in 1932MIT Election Lab
Peak Republican margin: R+37 in 1984MIT Election Lab

ROY, CharlesCongress 119 · Republican

−1 liberal

+1 conservative

Predecessors: SMITH, Lamar Seeligson (2017–2019), SMITH, Lamar Seeligson (2015–2017), SMITH, Lamar Seeligson (2013–2015), SMITH, Lamar Seeligson (2011–2013)

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

2024 results by constituent county

10 counties · 3 D · 7 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	R	−18.5%	165,108	241,171	411,786
2020	R	−12.7%	163,155	211,386	380,917
2016	R	−20.1%	104,626	161,083	280,887
2012	R	−27.5%	85,036	151,277	241,074
2008	R	−20.6%	93,501	142,610	238,966
2004	R	−31.8%	70,446	137,032	209,599
2000	R	−34.3%	52,656	111,679	172,207
1996	R	−17.8%	53,222	78,607	142,957
1992	R	−11.1%	49,362	65,751	147,574
1988	R	−21.7%	49,397	77,147	127,886
1984	R	−37.4%	36,161	79,607	116,067
1980	R	−23.8%	35,168	58,287	97,056
1976	R	−5.1%	38,538	42,757	82,451
1972	R	−35.5%	21,429	45,280	67,267
1968	R	−4.9%	22,252	24,837	53,221
1964	D	+26.8%	29,503	17,000	46,577
1960	R	−9.0%	18,199	21,819	40,194
1956	R	−33.8%	11,668	23,638	35,457
1952	R	−32.5%	12,788	25,129	38,009
1948	D	+1.5%	12,435	12,038	25,801
1944	R	−6.7%	10,458	12,066	24,113
1940	D	+7.1%	12,763	11,057	23,879
1936	D	+34.3%	12,716	6,180	19,061
1932	D	+64.9%	16,827	3,535	20,480
1928	R	−10.2%	7,460	9,166	16,648
1924	D	+2.5%	5,624	5,230	15,527
1920	R	−12.2%	3,798	5,301	12,315
1916	D	+7.0%	4,847	4,198	9,277
1912	D	+38.8%	3,957	1,083	7,409
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

14.2%

English

11.2%

Irish

8.2%

American

3.9%

Italian

2.6%

Scottish

1.9%

French

1.3%

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: 38.8 in this county, 39.1 nationally

Male

Age

Female

0.6%

85+

1.0%

2.2%

75–84

2.6%

4.7%

65–74

5.3%

5.8%

55–64

6.2%

6.0%

45–54

6.0%

7.0%

35–44

6.8%

6.9%

25–34

6.5%

5.1%

18–24

5.0%

8.5%

5–17

8.2%

2.9%

2.7%

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

Median household income

2024 inflation-adjusted dollars

$87,252

Congressional District 21 ranks near the middle of US counties.

Congressional District 21$87,252

Texas$78,476

United States$80,734

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

Poverty rate

All persons below federal poverty line

11.0%

Child poverty is below the national average.

Children under 1811.6%

Working age (18–64)10.8%

Seniors (65+)10.0%

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

Language at home

Population aged 5 and older

75.5%

speak English only

Spanish21.0%

Other Indo-European1.7%

Asian & Pacific Islander1.3%

Other languages0.4%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

26.0%

Other Christian

12.5%

Baptist

6.5%

Mainline Protestant

3.0%

Methodist

3.0%

Non-Christian

1.3%

Pentecostal & Holiness

1.1%

Source · 2020 US Religion Census. Remaining 46.5% of residents not counted as adherents by any reporting body.

Stretching from San Antonio's northern suburbs through the Texas Hill Country to the Permian Basin fringe, TX-21 has trended closer in presidential cycles as Bexar and Travis County spillover precincts add college-educated voters to an otherwise rural base.

The Republican margin in Texas 21st Congressional District reached its widest at thirty-seven points in 1984. The margin in 2024 was eighteen points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $87,252, a 61% non-Hispanic-white share, and a population of 854,942 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 21, Texas. Akashic. https://akashic.app/cd/4821/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Congressional District 21, Texas vote in 2024?

In 2024, Congressional District 21, Texas voted Republican by 18.5 points (R+18), carried by the Republican candidate. Out of 411,786 votes cast, 165,108 went Democratic and 241,171 went Republican.

What is Congressional District 21, Texas's political archetype?

Akashic classifies Congressional District 21, Texas as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 8 times, Republican 21 times, and other 0 times.

When did Congressional District 21, Texas last vote Democratic?

The most recent presidential election in which Congressional District 21, Texas voted Democratic was 1964.

How many people live in Congressional District 21, Texas?

Congressional District 21, Texas has a population of 854,942 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Congressional District 21, Texas?

Median household income in Congressional District 21, Texas is $87,252 — above the national median of $80,734. The Texas state median is $78,476.

What is the political history of Congressional District 21, Texas?

Akashic tracks 38 presidential elections in Congressional District 21, Texas from 1876 to 2024. Of those, 8 went Democratic and 21 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.

Texas 21st Congressional District has voted Republican in fifteen straight presidential cycles.

Key facts

U.S. Senate

Demographics

Compare two places, side by side

Frequently asked questions