Williamson County, Texas: New American county. In 2024, voted R+2%. Democratic peak: D+88 in 1932.
Key facts
- 2024 presidential margin
- R+2MIT Election Lab
- Political typology
- New AmericanAkashic typology
- Population
- 672,6882024 5-year
- Median household income
- $111,3402024 5-year
- White (non-Hispanic)
- 59.6%2024 5-year
- Black
- 7.0%2024 5-year
- Hispanic / Latino
- 24.7%2024 5-year
- Peak Democratic margin
- D+88 in 1932MIT Election Lab
- Peak Republican margin
- R+44 in 1984MIT Election Lab
- Most similar
- Chelan County, WA · similarity 0.97
2024 results by precinct
2024 precinct map of Williamson CountyPrecinct-level 2024 presidential results for Williamson County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | No data |
| 1896 | No data |
| 1900 | No data |
| 1904 | No data |
| 1908 | No data |
| 1912 | +68.7% |
| 1916 | +59.3% |
| 1920 | +56.6% |
| 1924 | +71.1% |
| 1928 | +33.6% |
| 1932 | +88.2% |
| 1936 | +85.8% |
| 1940 | +55.1% |
| 1944 | +54.4% |
| 1948 | +64.7% |
| 1952 | +15.7% |
| 1956 | +19.8% |
| 1960 | +37.9% |
| 1964 | +61.6% |
| 1968 | +25.7% |
| 1972 | −29.4% |
| 1976 | +11.0% |
| 1980 | −17.4% |
| 1984 | −44.3% |
| 1988 | −16.4% |
| 1992 | −11.1% |
| 1996 | −19.0% |
| 2000 | −40.1% |
| 2004 | −31.3% |
| 2008 | −13.0% |
| 2012 | −21.4% |
| 2016 | −9.6% |
| 2020 | +1.4% |
| 2024 | −2.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 147,766 | 155,310 | 309,515 | ||
| D | 143,795 | 139,729 | 290,168 | ||
| R | 84,468 | 104,175 | 204,659 | ||
| R | 61,875 | 97,006 | 163,804 | ||
| R | 67,691 | 88,323 | 158,403 | ||
| R | 43,117 | 83,284 | 128,198 | ||
| R | 26,591 | 65,041 | 95,935 | ||
| R | 24,175 | 36,836 | 66,522 | ||
| R | 19,437 | 26,208 | 61,254 | ||
| R | 19,589 | 27,322 | 47,230 | ||
| R | 9,911 | 25,774 | 35,784 | ||
| R | 10,408 | 15,035 | 26,661 | ||
| D | 9,355 | 7,481 | 17,010 | ||
| R | 3,806 | 6,998 | 10,867 | ||
| D | 5,528 | 2,923 | 10,123 | ||
| D | 7,430 | 1,766 | 9,202 | ||
| D | 5,410 | 2,429 | 7,870 | ||
| D | 4,402 | 2,947 | 7,367 | ||
| D | 5,010 | 3,646 | 8,663 | ||
| D | 5,638 | 1,094 | 7,026 | ||
| D | 5,284 | 1,239 | 7,431 | ||
| D | 5,944 | 1,714 | 7,671 | ||
| D | 4,995 | 375 | 5,383 | ||
| D | 6,783 | 418 | 7,214 | ||
| D | 3,689 | 1,833 | 5,531 | ||
| D | 6,324 | 934 | 7,578 | ||
| D | 3,677 | 819 | 5,051 | ||
| D | 2,701 | 656 | 3,451 | ||
| D | 2,014 | 246 | 2,572 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
14.0%
English
11.8%
Irish
8.3%
American
4.0%
Italian
3.3%
Scottish
2.4%
French
2.0%
African American
5.6%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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: 37.3 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$111,340
Williamson County ranks in the top 0.5% of US counties.
Williamson County$111,340
Texas$78,476
United States$80,734
Williamson County ranks in the top 0.5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
6.4%
Child poverty is below the national average.
Children under 187.1%
Working age (18–64)6.1%
Seniors (65+)8.0%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
74.5%
speak English only
Spanish14.0%
Asian & Pacific Islander5.8%
Other Indo-European4.5%
Other languages1.2%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 59.2% of residents not counted as adherents by any reporting body.
Williamson County's rapid suburban growth along the I-35 corridor has compressed a once-comfortable Republican margin to 2.5 points, making it one of the closer-watched bellwether counties in Central Texas.
Williamson County has leaned Republican in recent presidential elections, reaching a Democratic margin of eighty-eight points in 1932. Between 2020 and 2024 it moved four points toward the Republican candidate — part of the sharpest rightward shift recorded among any group of places in the country.
Its demographics describe the shift: a 60% non-Hispanic-white share, a median household income of $111,340, and a population of 672,688. The county's voting pattern over the last decade is most similar to that of Chelan County and Denton County.
Most similar counties
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.
Williamson County, Texas. Akashic. https://akashic.app/county/48491/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Williamson County, Texas vote in 2024?
In 2024, Williamson County, Texas voted Republican by 2.4 points (R+2), carried by the Republican candidate. Out of 309,515 votes cast, 147,766 went Democratic and 155,310 went Republican.
What is Williamson County, Texas's political typology?
Akashic places Williamson County, Texas in the "New American" typology — Communities where a large share of households speak a language other than English — multilingual, Democratic-leaning overall, yet the hardest-swinging bloc toward the Republican Party in 2024. 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 38 elections in the dataset, the county has voted Democratic 17 times, Republican 12 times, and other 0 times.
When did Williamson County, Texas last vote Democratic?
The most recent presidential election in which Williamson County, Texas voted Democratic was 2020.
How many people live in Williamson County, Texas?
Williamson County, Texas has a population of 672,688 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Williamson County, Texas?
Median household income in Williamson County, Texas is $111,340 — above the national median of $80,734. The Texas state median is $78,476.
What is the political history of Williamson County, Texas?
Akashic tracks 38 presidential elections in Williamson County, Texas from 1876 to 2024. Of those, 17 went Democratic and 12 went Republican. The county's typology — "New American" — captures where that record, its demographics, and its recent swing place it among American communities.