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.
Louisville/Jefferson County, KY-IN · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in Louisville/Jefferson County, KY-IN, by party and cycle.
Party
2008
2012
2016
2020
2024
Democratic
Clinton11Obama1249,464 votes · 12 of 12 countiesprimary
○no contest record
Clinton8Sanders4165,480 votes · 12 of 12 countiesprimary
Biden12205,455 votes · 12 of 12 countiesprimary
○no contest record
Republicannot ingested
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
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.
Voter registration in Louisville/Jefferson County, KY-IN
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
Domestic migration in Louisville/Jefferson County, KY-IN in Louisville/Jefferson County, KY-IN: net domestic migration by year
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.
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.
Louisville/Jefferson County, KY-IN, Kentucky. Akashic. https://akashic.app/cbsa/31140/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
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.
