Williamson County, Tennessee: Realigning Affluent Suburb county. In 2024, voted R+32%. Democratic peak: D+82 in 1932.
Key facts
- 2024 presidential margin
- R+32MIT Election Lab
- Political typology
- Realigning Affluent SuburbAkashic typology
- Population
- 260,3512024 5-year
- Median household income
- $135,5942024 5-year
- White (non-Hispanic)
- 81.9%2024 5-year
- Black
- 3.9%2024 5-year
- Hispanic / Latino
- 6.0%2024 5-year
- Peak Democratic margin
- D+82 in 1932MIT Election Lab
- Peak Republican margin
- R+47 in 1972MIT Election Lab
- Most similar
- Cherokee County, GA · similarity 1.00
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 | +46.1% |
| 1896 | +40.8% |
| 1900 | +48.9% |
| 1904 | +57.6% |
| 1908 | +51.7% |
| 1912 | +45.8% |
| 1916 | +54.3% |
| 1920 | +35.9% |
| 1924 | +72.2% |
| 1928 | +39.4% |
| 1932 | +81.5% |
| 1936 | +81.2% |
| 1940 | +72.3% |
| 1944 | +62.9% |
| 1948 | +45.0% |
| 1952 | +27.4% |
| 1956 | +35.3% |
| 1960 | +24.5% |
| 1964 | +30.4% |
| 1968 | −7.5% |
| 1972 | −46.8% |
| 1976 | +1.9% |
| 1980 | −13.2% |
| 1984 | −44.2% |
| 1988 | −45.0% |
| 1992 | −22.3% |
| 1996 | −27.5% |
| 2000 | −34.5% |
| 2004 | −44.8% |
| 2008 | −39.5% |
| 2012 | −46.5% |
| 2016 | −35.0% |
| 2020 | −26.1% |
| 2024 | −32.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 47,695 | 94,562 | 144,668 | ||
| R | 50,161 | 86,469 | 139,016 | ||
| R | 31,013 | 68,212 | 106,271 | ||
| R | 25,142 | 69,850 | 96,225 | ||
| R | 27,886 | 64,858 | 93,646 | ||
| R | 21,732 | 57,451 | 79,650 | ||
| R | 18,745 | 38,901 | 58,429 | ||
| R | 15,231 | 27,699 | 45,376 | ||
| R | 13,053 | 22,015 | 40,195 | ||
| R | 7,864 | 20,847 | 28,823 | ||
| R | 6,929 | 17,975 | 24,997 | ||
| R | 8,815 | 11,597 | 21,095 | ||
| D | 8,183 | 7,880 | 16,266 | ||
| R | 2,616 | 7,556 | 10,564 | ||
| O | 2,063 | 2,788 | 9,718 | ||
| D | 5,075 | 2,707 | 7,782 | ||
| D | 4,471 | 2,699 | 7,228 | ||
| D | 4,174 | 1,979 | 6,211 | ||
| D | 4,085 | 2,326 | 6,430 | ||
| D | 2,294 | 556 | 3,861 | ||
| D | 2,656 | 602 | 3,268 | ||
| D | 3,215 | 505 | 3,746 | ||
| D | 2,769 | 286 | 3,059 | ||
| D | 2,777 | 261 | 3,087 | ||
| D | 1,595 | 693 | 2,288 | ||
| D | 1,626 | 242 | 1,916 | ||
| D | 2,004 | 946 | 2,950 | ||
| D | 2,036 | 600 | 2,646 | ||
| D | 2,205 | 797 | 3,073 | ||
| D | 1,928 | 605 | 2,561 | ||
| D | 1,932 | 475 | 2,528 | ||
| D | 2,136 | 704 | 2,927 | ||
| D | 3,097 | 1,281 | 4,446 | ||
| D | 1,992 | 575 | 3,071 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
20.2%
German
12.9%
Irish
11.6%
American
8.2%
Italian
3.8%
Scottish
3.2%
French
2.1%
African American
3.1%
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: 40.4 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
$135,594
Williamson County ranks in the top 0.5% of US counties.
Williamson County$135,594
Tennessee$69,595
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
4.6%
Child poverty is below the national average.
Children under 184.8%
Working age (18–64)4.3%
Seniors (65+)7.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
90.2%
speak English only
Spanish3.8%
Other Indo-European2.7%
Asian & Pacific Islander2.7%
Other languages0.6%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 45.0% of residents not counted as adherents by any reporting body.
Williamson County pairs some of Tennessee's highest household incomes with one of its most lopsided presidential margins, running R+32.4 in 2024 even as rapid population growth from Nashville's sprawl continues to reshape its electorate.
Once reliably Republican — a margin of forty-seven points in 1972 at its widest — Williamson County has trended Democratic. Between 2020 and 2024 the county moved six points toward the Republican candidate; the 2024 margin was thirty-two points.
A median household income of $135,594 — among the higher at this geographic scale — and a population of 260,351 describe the county. The county's voting pattern over the last decade is most similar to that of Cherokee County and St. Johns 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, Tennessee. Akashic. https://akashic.app/county/47187/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in Tennessee
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Frequently asked questions
How did Williamson County, Tennessee vote in 2024?
In 2024, Williamson County, Tennessee voted Republican by 32.4 points (R+32), carried by the Republican candidate. Out of 144,668 votes cast, 47,695 went Democratic and 94,562 went Republican.
What is Williamson County, Tennessee's political typology?
Akashic places Williamson County, Tennessee in the "Realigning Affluent Suburb" typology — College-educated, affluent suburbs — the one bloc moving toward the Democratic Party. 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 20 times, Republican 13 times, and other 1 times.
When did Williamson County, Tennessee last vote Democratic?
The most recent presidential election in which Williamson County, Tennessee voted Democratic was 1976.
How many people live in Williamson County, Tennessee?
Williamson County, Tennessee has a population of 260,351 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Williamson County, Tennessee?
Median household income in Williamson County, Tennessee is $135,594 — above the national median of $80,734. The Tennessee state median is $69,595.
What is the political history of Williamson County, Tennessee?
Akashic tracks 38 presidential elections in Williamson County, Tennessee from 1876 to 2024. Of those, 20 went Democratic and 13 went Republican. The county's typology — "Realigning Affluent Suburb" — captures where that record, its demographics, and its recent swing place it among American communities.