HarrisDemocratic45.8%297,472TrumpRepublican52.4%340,646OtherAll other candidates1.8%11,508
R+6.6- Lead
- 43,174
- Total
- 649,626
- vs nation
- R+5.2
Akashicmetro area
Louisville/Jefferson County, KY-IN
Office (updates table and map)
President margin by year
Place winner margin
12 counties by 2024 margin · County returns · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic48.0%325,715TrumpRepublican50.1%340,278OtherAll other candidates1.9%12,626
R+2.1- Lead
- 14,563
- Total
- 678,619
- vs nation
- R+6.6
ClintonDemocratic44.0%268,986TrumpRepublican50.7%310,450OtherAll other candidates5.3%32,361
R+6.8- Lead
- 41,464
- Total
- 611,797
- vs nation
- R+8.9
ObamaDemocratic47.7%274,973RomneyRepublican50.5%291,144OtherAll other candidates1.8%10,169
R+2.8- Lead
- 16,171
- Total
- 576,286
- vs nation
- R+6.7
ObamaDemocratic49.2%290,790McCainRepublican49.6%293,149OtherAll other candidates1.1%6,503
R+0.4- Lead
- 2,359
- Total
- 590,442
- vs nation
- R+7.7
KerryDemocratic44.8%248,697BushRepublican54.4%302,234OtherAll other candidates0.8%4,243
R+9.6- Lead
- 53,537
- Total
- 555,174
- vs nation
- R+7.2
GoreDemocratic45.9%221,629BushRepublican51.9%250,663OtherAll other candidates2.2%10,644
R+6.0- Lead
- 29,034
- Total
- 482,936
- vs nation
- R+6.5
ClintonDemocratic49.0%216,794DoleRepublican42.4%187,573OtherAll other candidates8.6%38,073
D+6.6- Lead
- 29,221
- Total
- 442,440
- vs nation
- R+1.9
Key facts
- 2024 presidential margin
- R+6.6MIT Election Lab
- Population
- 1,372,5582024 5-year
- Population density
- 347 / sq mi2024 5-year · TIGER/Line
- Land area
- 3,961 sq miTIGER/Line
- Median household income
- $75,1272024 5-year
- White (non-Hispanic)
- 72.4%2024 5-year
- Black
- 13.4%2024 5-year
- Hispanic / Latino
- 7.0%2024 5-year
- Peak Democratic margin
- D+38.8 in 1912MIT Election Lab
- Peak Republican margin
- R+22.2 in 1972MIT Election Lab
- Most similar
- Kansas City, MO-KS · twin score 94.4
presidential history
Party record book
Louisville/Jefferson County, KY-IN · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
65.5%
214,961 votes · D+31.4
Runner-up · Franklin D. Roosevelt, 1936 · 61.4%
Republican
Richard Nixon1972
60.1%
202,890 votes · R+22.2
Runner-up · Ronald Reagan, 1984 · 58.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
325,715votes
48.0% of the vote · R+2.1
Runner-up · Kamala Harris, 2024 · 297,472 votes
Republican
Donald Trump2024
340,646votes
52.4% of the vote · R+6.6
Runner-up · Donald Trump, 2020 · 340,278 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Alton B. Parker1904
+26.1pts D vs U.S.
Place D+6.4 · U.S. R+19.7
Runner-up · James M. Cox, 1920 · +25.7 pts
Republican
Donald Trump2016
+8.9pts R vs U.S.
Place R+6.8 · U.S. D+2.1
Runner-up · John McCain, 2008 · +7.7 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Some U.S. House rows cover a contest held in only part of this Place — the votes are real, but the total is not place-wide because the rest of the Place had no such race that year.
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
voter registration
Registered voters
By party of registration, over time
Registered voters
† Some years predate full county coverage; a flagged year sums only the counties reporting it.
| Year | Total registered |
|---|---|
| 2016 (partial) | 205,247 |
| 2018 (partial) | 193,036 |
| 2020 (partial) | 203,978 |
| 2022 (partial) | 209,915 |
| 2024 | 1,094,055 |
domestic migration
Who moves in and out
Net domestic migration over time
−2,115 net domestic migration · 2025
20112025
Net +6,895 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | +1,915 |
| 2012 | +1,042 |
| 2013 | +4,668 |
| 2014 | +1,348 |
| 2015 | −637 |
| 2016 | +1,018 |
| 2017 | +2,380 |
| 2018 | −228 |
| 2019 | −153 |
| 2021 | −1,469 |
| 2022 | −49 |
| 2023 | −1,215 |
| 2024 | +390 |
| 2025 | −2,115 |
Louisville's Jefferson County votes Democratic by wide margins, making it one of Kentucky's few population centers that consistently offsets surrounding rural Republican strongholds—though not enough to swing statewide outcomes.
Across the recorded series it reached a Democratic high of 38.8 points in 1912 and a Republican high of 22.2 points in 1972. Between 2020 and 2024 the metro moved 4.5 points toward the Republican candidate; the 2024 margin was 6.6 points.
A population of 1,372,558, a 72% non-Hispanic-white share, and a median household income of $75,127 describe the metro. The metro's voting pattern over the last decade is most similar to that of Kansas City, MO-KS and Columbus, OH.
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Kansas City, MO-KS
94.4twin score
population scale2016–2024 trajectory
Columbus, OH
92.0twin score
population scale2020–2024 trajectory12-yr trend
St. Louis, MO-IL
89.4twin score
population scale2016–2024 trajectory
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.
Louisville/Jefferson County, KY-IN, Kentucky. Akashic. https://akashic.app/cbsa/31140/. Accessed May 20, 2026. License: CC BY 4.0.
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Places within Louisville/Jefferson County, KY-IN
Frequently asked questions
How did Louisville/Jefferson County, KY-IN, Kentucky vote in 2024?
In 2024, Louisville/Jefferson County, KY-IN, Kentucky voted Republican by 6.6 points (R+6.6), carried by the Republican candidate. Out of 649,626 votes cast, 297,472 went Democratic and 340,646 went Republican.
When did Louisville/Jefferson County, KY-IN, Kentucky last vote Democratic?
The most recent presidential election in which Louisville/Jefferson County, KY-IN, Kentucky voted Democratic was 1996.
How many people live in Louisville/Jefferson County, KY-IN, Kentucky?
Louisville/Jefferson County, KY-IN, Kentucky has a population of 1,372,558 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Louisville/Jefferson County, KY-IN, Kentucky?
Median household income in Louisville/Jefferson County, KY-IN, Kentucky is $75,127 — below the national median of $80,734. The Kentucky state median is $71,957.
What is the political history of Louisville/Jefferson County, KY-IN, Kentucky?
Akashic tracks 34 presidential elections in Louisville/Jefferson County, KY-IN, Kentucky from 1892 to 2024. Of those, 16 went Democratic and 18 went Republican.