Barnwell County, South Carolina: Black Belt county. In 2024, voted R+16%. Democratic peak: D+100 in 1936.
Key facts
- 2024 presidential margin
- R+16MIT Election Lab
- Political typology
- Black BeltAkashic typology
- Population
- 20,5212024 5-year
- Median household income
- $46,6262024 5-year
- White (non-Hispanic)
- 52.2%2024 5-year
- Black
- 42.8%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+100 in 1936MIT Election Lab
- Peak Republican margin
- R+45 in 1964MIT Election Lab
- Most similar
- Porter County, IN · similarity 0.95
2024 results by precinct
2024 precinct map of Barnwell CountyPrecinct-level 2024 presidential results for Barnwell 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 | +58.3% |
| 1896 | No data |
| 1900 | +91.9% |
| 1904 | +95.1% |
| 1908 | +88.2% |
| 1912 | +98.3% |
| 1916 | +97.1% |
| 1920 | +93.3% |
| 1924 | +94.5% |
| 1928 | +93.6% |
| 1932 | +99.2% |
| 1936 | +99.9% |
| 1940 | +98.6% |
| 1944 | +97.9% |
| 1948 | +4.2% |
| 1952 | +41.7% |
| 1956 | +46.3% |
| 1960 | −16.1% |
| 1964 | −45.3% |
| 1968 | −2.2% |
| 1972 | −43.4% |
| 1976 | +22.8% |
| 1980 | +2.6% |
| 1984 | −21.4% |
| 1988 | −26.9% |
| 1992 | −8.3% |
| 1996 | −2.4% |
| 2000 | −10.4% |
| 2004 | −7.2% |
| 2008 | +1.7% |
| 2012 | +5.3% |
| 2016 | −5.2% |
| 2020 | −7.5% |
| 2024 | −15.5% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 4,082 | 5,605 | 9,803 | ||
| R | 4,720 | 5,492 | 10,321 | ||
| R | 4,400 | 4,889 | 9,485 | ||
| D | 5,188 | 4,659 | 9,923 | ||
| D | 4,931 | 4,769 | 9,798 | ||
| R | 3,982 | 4,606 | 8,685 | ||
| R | 3,661 | 4,521 | 8,276 | ||
| R | 3,620 | 3,808 | 7,774 | ||
| R | 3,344 | 4,026 | 8,177 | ||
| R | 2,564 | 4,467 | 7,075 | ||
| R | 2,811 | 4,346 | 7,189 | ||
| D | 3,399 | 3,228 | 6,705 | ||
| D | 4,083 | 2,569 | 6,652 | ||
| R | 1,560 | 3,955 | 5,515 | ||
| O | 1,716 | 1,849 | 5,916 | ||
| R | 1,382 | 3,670 | 5,052 | ||
| R | 1,331 | 1,842 | 3,173 | ||
| D | 1,914 | 520 | 3,009 | ||
| D | 1,598 | 657 | 2,255 | ||
| O | 115 | 28 | 2,064 | ||
| D | 1,482 | 8 | 1,506 | ||
| D | 1,845 | 13 | 1,858 | ||
| D | 2,157 | 0 | 2,159 | ||
| D | 1,877 | 0 | 1,892 | ||
| D | 1,028 | 34 | 1,062 | ||
| D | 847 | 23 | 872 | ||
| D | 721 | 25 | 746 | ||
| D | 1,454 | 21 | 1,476 | ||
| D | 1,139 | 0 | 1,159 | ||
| D | 1,407 | 88 | 1,495 | ||
| D | 1,401 | 35 | 1,436 | ||
| D | 1,356 | 57 | 1,413 | ||
| — | — | — | — | ||
| D | 2,137 | 549 | 2,726 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
18.5%
English
5.5%
German
3.0%
Irish
3.0%
Scottish
1.4%
Italian
0.7%
African American
34.2%
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
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
$46,626
Barnwell County ranks in the bottom 10% of US counties.
Barnwell County$46,626
South Carolina$69,324
United States$80,734
Barnwell County ranks in the bottom 10% 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
25.0%
Nearly half of children live in poverty.
Children under 1843.2%
Working age (18–64)18.9%
Seniors (65+)24.0%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
96.7%
speak English only
Spanish1.7%
Other Indo-European0.9%
Asian & Pacific Islander0.3%
Other languages0.3%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 40.1% of residents not counted as adherents by any reporting body.
Barnwell's electorate skews older and rural, with a substantial Black population concentrated in the county seat that consistently offsets some of the countywide Republican lean, keeping margins closer in local races than federal ones.
The Democratic margin here reached 100 points in 1936. Between 2020 and 2024 the county moved eight points toward the Republican candidate; the 2024 margin was sixteen points. The recent movement, modest against a deep Democratic baseline, mirrors a broader rightward drift across the Black Belt.
The economic context is part of the story: a median household income of $46,626 and a 25% poverty rate. The county's voting pattern over the last decade is most similar to that of Porter County and Berks 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.
Barnwell County, South Carolina. Akashic. https://akashic.app/county/45011/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in South Carolina
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Frequently asked questions
How did Barnwell County, South Carolina vote in 2024?
In 2024, Barnwell County, South Carolina voted Republican by 15.5 points (R+16), carried by the Republican candidate. Out of 9,803 votes cast, 4,082 went Democratic and 5,605 went Republican.
What is Barnwell County, South Carolina's political typology?
Akashic places Barnwell County, South Carolina in the "Black Belt" typology — Black-majority counties of the rural South — long the most Democratic ground in the region, now trending Republican at the margins. 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 19 times, Republican 12 times, and other 2 times.
When did Barnwell County, South Carolina last vote Democratic?
The most recent presidential election in which Barnwell County, South Carolina voted Democratic was 2012.
How many people live in Barnwell County, South Carolina?
Barnwell County, South Carolina has a population of 20,521 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Barnwell County, South Carolina?
Median household income in Barnwell County, South Carolina is $46,626 — below the national median of $80,734. The South Carolina state median is $69,324.
What is the political history of Barnwell County, South Carolina?
Akashic tracks 38 presidential elections in Barnwell County, South Carolina from 1876 to 2024. Of those, 19 went Democratic and 12 went Republican. The county's typology — "Black Belt" — captures where that record, its demographics, and its recent swing place it among American communities.