† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
5 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupAustin-Round Rock-San Marcos, TXTexasUnited States
German12.4%8.3%12.5%
English10.8%7.9%9.5%
Irish8.3%6.0%9.4%
American3.5%4.6%5.3%
Italian3.1%1.9%4.8%
Scottish2.4%1.3%1.3%
French2.1%1.5%1.6%
Polish1.6%0.8%2.2%
Mexican24.5%32.1%11.3%
Puerto Rican0.9%0.8%1.8%
Honduran0.9%0.8%0.3%
Salvadoran0.7%1.2%0.7%
Cuban0.7%0.5%0.7%
Spaniard0.5%0.3%—
Guatemalan0.3%0.4%0.5%
Colombian0.3%0.3%0.4%
Asian Indian3.0%1.8%1.4%
Chinese1.2%0.8%1.3%
Vietnamese0.7%1.0%0.6%
Filipino0.5%0.5%0.9%
Korean0.5%0.3%0.4%
Pakistani0.3%0.3%—
Nepalese0.2%——
Taiwanese0.2%——
African American†5.7%10.3%9.9%
African0.5%0.6%0.5%
Nigerian0.3%0.4%0.2%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Austin-Round Rock-San Marcos, TX
Texas
United States
Median age
36
35.7
39.1
Age 18–24
9.4%
9.7%
9.2%
Age 65 and older
12.0%
13.5%
17.2%
Household economy
Measure
Austin-Round Rock-San Marcos, TX
Texas
United States
Median household income
$100,512
$78,476
$84,427
Poverty rate
9.8%
13.8%
12.5%
Bachelor's degree or higher (25+)
50.7%
33.6%
35.6%
Languages at home
Measure
Austin-Round Rock-San Marcos, TX
Texas
United States
Speaks a non-English language at home
28.4%
35.2%
22.3%
Spanish
19.7%
28.2%
13.6%
Other Indo-European
2.4%
1.7%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.0%
0.7%
1.1%
Other Asian & Pacific Island
1.7%
1.1%
1.1%
Religious landscape
Measure
Austin-Round Rock-San Marcos, TX
Texas
United States
Catholic
18.7%
20.1%
18.6%
Evangelical Protestant
13.6%
23.5%
16.5%
Unclaimed / not counted
57.6%
45.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Austin-Round Rock-San Marcos, TX
presidential history
Presidential margin, 1912–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1912
+65.9%
1916
+61.9%
1920
+45.1%
1924
+63.3%
1928
+8.1%
1932
+81.6%
1936
+82.4%
1940
+65.9%
1944
+59.9%
1948
+54.6%
1952
+3.3%
1956
−0.4%
1960
+17.3%
1964
+42.9%
1968
+11.2%
1972
−15.0%
1976
+7.4%
1980
−0.9%
1984
−18.8%
1988
+5.1%
1992
+10.0%
1996
+4.9%
2000
−14.7%
2004
−0.5%
2008
+14.2%
2012
+7.1%
2016
+19.5%
2020
+26.8%
2024
+20.4%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
59.3%Harris634,882
38.9%Trump416,716
0.9%Stein9,464 +2
D+20.4
R+6.4
D+21.8
1,071,071
All 5 candidates in 2024 · 3 minor / independent
Kamala D HarrisDemocratic59.3%634,882
Donald J TrumpRepublican38.9%416,716
Jill SteinIndependent0.9%9,464
Chase OliverLibertarian0.8%8,548
OtherAll other candidates0.1%1,461
D
62.3%Biden661,325
35.5%Trump377,293
2.2%
D+26.8
D+7.3
D+22.3
1,061,647
D
56.1%Clinton441,316
36.7%Trump288,229
7.2%
D+19.5
D+12.3
D+17.4
786,386
D
51.9%Obama334,855
44.8%Romney288,873
3.4%
D+7.1
R+7.0
D+3.3
645,421
D
56.3%Obama367,229
42.1%McCain274,866
1.6%
D+14.2
D+14.6
D+6.9
652,735
R
48.9%Kerry275,308
49.3%Bush277,916
1.8%
R+0.5
D+14.3
D+2.0
563,162
R
38.0%Gore174,349
52.7%Bush241,972
9.3%
R+14.7
R+19.6
R+15.2
459,248
D
48.5%Clinton175,459
43.6%Dole157,717
8.0%
D+4.9
R+5.1
R+3.6
362,069
D
44.1%Clinton170,871
34.1%Bush132,050
21.8%
D+10.0
D+4.9
D+4.5
387,574
D
52.1%Dukakis171,212
47.0%Bush154,497
1.0%
D+5.1
D+23.8
D+12.8
328,932
R
40.5%Mondale118,843
59.2%Reagan173,939
0.3%
R+18.8
R+17.8
R+0.5
293,737
R
46.2%Carter99,320
47.1%Reagan101,350
6.7%
R+0.9
R+8.4
D+8.8
214,975
D
53.0%Carter103,380
45.5%Ford88,844
1.5%
D+7.4
D+22.4
D+5.4
195,223
R
42.3%McGovern65,911
57.2%Nixon89,233
0.5%
R+15.0
R+26.2
D+8.2
155,885
D
49.8%Humphrey54,317
38.6%Nixon42,082
11.6%
D+11.2
R+31.7
D+11.9
109,073
D
71.4%Johnson62,760
28.5%Goldwater25,059
0.1%
D+42.9
D+25.6
D+20.3
87,902
D
58.5%Kennedy40,943
41.2%Nixon28,832
0.3%
D+17.3
D+17.7
D+17.1
69,965
R
49.7%Stevenson31,418
50.1%Eisenhower31,649
0.2%
R+0.4
R+3.6
D+15.0
63,212
D
51.6%Stevenson32,270
48.3%Eisenhower30,223
0.1%
D+3.3
R+51.4
D+14.0
62,557
D
74.4%Truman32,785
19.8%Dewey8,709
5.9%
D+54.6
R+5.3
D+50.1
44,073
D
74.1%Roosevelt26,878
14.2%Dewey5,147
11.7%
D+59.9
R+6.0
D+52.4
36,266
D
82.8%Roosevelt31,606
16.9%Willkie6,456
0.2%
D+65.9
R+16.5
D+56.0
38,157
D
90.7%Roosevelt24,465
8.4%Landon2,260
0.9%
D+82.4
D+0.8
D+58.1
26,960
D
90.5%Roosevelt26,717
8.9%Hoover2,641
0.5%
D+81.6
D+73.5
D+63.8
29,509
D
54.0%Smith11,541
45.9%Hoover9,807
0.1%
D+8.1
R+55.2
D+25.6
21,374
D
79.3%Davis20,418
16.0%Coolidge4,130
4.6%
D+63.3
D+18.1
D+88.5
25,743
D
63.1%Cox10,621
17.9%Harding3,018
19.0%
D+45.1
R+16.8
D+71.3
16,845
D
80.0%Wilson9,929
18.1%Hughes2,244
1.9%
D+61.9
R+4.0
D+58.8
12,412
D
76.2%Wilson7,783
10.2%Taft1,046
13.6%
D+65.9
—
D+46.4
10,218
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Congressional elections · 3 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2024
D
60.9%649,057
36.4%388,152
1,065,149
2020
D
59.3%619,428
37.9%396,302
1,044,291
2018
D
65.2%528,515
33.7%273,657
811,113
voter registration
Registered voters
Total registered voters, over time
Registered voters
† Some years predate full county coverage; a flagged year sums only the counties reporting it.
Voter registration in Austin-Round Rock-San Marcos, TX
Year
Total registered
2016 (partial)
1,185,369
2018
1,322,214
2020
1,462,130
2022
1,550,353
2024
1,646,337
domestic migration
Who moves in and out
Net domestic migration over time
+19,860 net domestic migration · 2025
20112025
Net +426,338 over 2011–2025 · gain loss
Domestic migration in Austin-Round Rock-San Marcos, TX in Austin-Round Rock-San Marcos, TX: net domestic migration by year
Year
Net domestic migration
2011
+30,808
2012
+30,449
2013
+25,818
2014
+33,245
2015
+32,833
2016
+34,283
2017
+29,589
2018
+29,361
2019
+41,334
2021
+44,254
2022
+37,180
2023
+21,984
2024
+15,340
2025
+19,860
Rapid in-migration from coastal tech hubs has reshaped the electorate faster than almost any other Sun Belt metro, compressing Republican margins in surrounding Williamson and Hays counties even as the urban core remains heavily Democratic.
Across the recorded series it reached a Democratic high of 82.4 points in 1936 and a Republican high of 18.8 points in 1984. Between 2020 and 2024 the metro moved 6.4 points toward the Republican candidate; the 2024 margin was 20.4 points.
A population of 2,426,592, a 49% non-Hispanic-white share, and a median household income of $100,512 describe the metro. The metro's voting pattern over the last decade is most similar to that of Denver-Aurora-Centennial, CO and San Diego-Chula Vista-Carlsbad, CA.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Austin-Round Rock-San Marcos, TX, Texas. Akashic. https://akashic.app/cbsa/12420/. Accessed May 20, 2026. License: CC BY 4.0.
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How did Austin-Round Rock-San Marcos, TX, Texas vote in 2024?
In 2024, Austin-Round Rock-San Marcos, TX, Texas voted Democratic by 20.4 points (D+20.4), carried by the Democratic candidate. Out of 1,071,071 votes cast, 634,882 went Democratic and 416,716 went Republican.
When did Austin-Round Rock-San Marcos, TX, Texas last vote Republican?
The most recent presidential election in which Austin-Round Rock-San Marcos, TX, Texas voted Republican was 2004.
How many people live in Austin-Round Rock-San Marcos, TX, Texas?
Austin-Round Rock-San Marcos, TX, Texas has a population of 2,426,592 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Austin-Round Rock-San Marcos, TX, Texas?
Median household income in Austin-Round Rock-San Marcos, TX, Texas is $100,512 — above the national median of $80,734. The Texas state median is $78,476.
What is the political history of Austin-Round Rock-San Marcos, TX, Texas?
Akashic tracks 34 presidential elections in Austin-Round Rock-San Marcos, TX, Texas from 1892 to 2024. Of those, 23 went Democratic and 6 went Republican.
