- Lead
- 16,877
- Total
- 122,630
- vs nation
- R+12.3
Hilton Head Island-Bluffton-Port Royal, SC
President margin by year
Place winner margin
President results by year
Vote totals, margins, and source status
- Lead
- 9,668
- Total
- 112,229
- vs nation
- R+13.1
- Lead
- 10,015
- Total
- 89,951
- vs nation
- R+13.2
- Lead
- 11,251
- Total
- 83,318
- vs nation
- R+17.4
- Lead
- 5,401
- Total
- 77,724
- vs nation
- R+14.2
- Lead
- 10,919
- Total
- 62,081
- vs nation
- R+15.1
- Lead
- 6,842
- Total
- 50,617
- vs nation
- R+14.0
- Lead
- 2,014
- Total
- 39,630
- vs nation
- R+13.6
Key facts
- 2024 presidential margin
- R+13.8MIT Election Lab
- Population
- 227,4552024 5-year
- Population density
- 185 / sq mi2024 5-year · TIGER/Line
- Land area
- 1,231 sq miTIGER/Line
- Median household income
- $83,6092024 5-year
- White (non-Hispanic)
- 64.3%2024 5-year
- Black
- 17.9%2024 5-year
- Hispanic / Latino
- 13.1%2024 5-year
- Peak Democratic margin
- D+95.3 in 1936MIT Election Lab
- Peak Republican margin
- R+25.9 in 1972MIT Election Lab
- Most similar
- Wilmington, NC · twin score 83.5
presidential history
Party record book
Hilton Head Island-Bluffton-Port Royal, SC · 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
Franklin D. Roosevelt1936
95.3%
953 votes · D+95.3
Runner-up · Franklin D. Roosevelt, 1932 · 92.3%
Republican
Richard Nixon1972
62.5%
7,579 votes · R+25.9
Runner-up · George H. W. Bush, 1988 · 60.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
52,146votes
42.5% of the vote · R+13.8
Runner-up · Joe Biden, 2020 · 50,604 votes
Republican
Donald Trump2024
69,023votes
56.3% of the vote · R+13.8
Runner-up · Donald Trump, 2020 · 60,272 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
John W. Davis1924
+94.1pts D vs U.S.
Place D+68.9 · U.S. R+25.2
Runner-up · James M. Cox, 1920 · +79.1 pts
Republican
Barry Goldwater1964
+37.1pts R vs U.S.
Place R+14.5 · U.S. D+22.6
Runner-up · Benjamin Harrison, 1892 · +22.7 pts
Senate and governor results are in the Office selector at the top of this page.
U.S. House
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.
Registered voters
Total registered voters, over time
| Year | Total registered |
|---|---|
| 2016 | 131,151 |
| 2018 | 161,404 |
| 2020 | 171,622 |
| 2022 | 177,745 |
| 2024 | 183,239 |
Who moves in and out
Net domestic migration over time
+3,196 net domestic migration · 2025
Net +46,365 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | +530 |
| 2012 | +1,975 |
| 2013 | +2,896 |
| 2014 | +3,287 |
| 2015 | +4,163 |
| 2016 | +3,114 |
| 2017 | +3,029 |
| 2018 | +2,505 |
| 2019 | +3,640 |
| 2021 | +5,802 |
| 2022 | +4,932 |
| 2023 | +3,695 |
| 2024 | +3,601 |
| 2025 | +3,196 |
Rapid population growth driven by affluent retirees and second-home buyers has shifted this coastal South Carolina metro's demographic profile steadily over the past decade, making voter composition harder to project from historical baselines.
Across the recorded series it reached a Democratic high of 95.3 points in 1936 and a Republican high of 25.9 points in 1972. Between 2020 and 2024 the metro moved 5.1 points toward the Republican candidate; the 2024 margin was 13.8 points.
A population of 227,455, a 64% non-Hispanic-white share, and a median household income of $83,609 describe the metro. The metro's voting pattern over the last decade is most similar to that of Wilmington, NC and Easton, MD.
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 →
Hilton Head Island-Bluffton-Port Royal, SC, South Carolina. Akashic. https://akashic.app/cbsa/25940/. Accessed May 20, 2026. License: CC BY 4.0.