state senate districtSouth Carolina 21st State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004D+34.4
2008D+46.6
2012D+48.7
2016D+48.2
2020D+51.5
2024D+46.6
net swing · 2004→2024D+12.1D+34.4 → D+46.6
vs. U.S. · 2024D+48.0D+46.6 vs R+1.5
presidential returns
2024 turnout 54.5% of 83,295 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
32,823
11,697
856
45,376
83,295
54.5%
2020
37,892
11,874
774
50,540
82,023†
61.6%
2016
33,407
10,965
2,141
46,513
79,034†
58.9%
2012
35,739
12,109
627
48,475
74,548†
65.0%
2008
36,949
13,281
612
50,842
68,844†
73.9%
2004
26,661
12,919
352
39,932
63,139†
63.2%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupSC SD 21South CarolinaUnited States
African American†50.0%23.4%9.9%
African0.9%0.6%0.5%
Jamaican0.8%0.2%0.4%
Nigerian0.2%—0.2%
West Indian0.2%——
English7.7%12.1%9.5%
German7.2%9.4%12.5%
Irish5.7%9.1%9.4%
American4.3%8.2%5.3%
Italian2.5%3.4%4.8%
Scottish1.7%2.1%1.3%
Scotch-Irish1.5%1.4%—
French1.4%1.1%1.6%
Mexican1.8%3.4%11.3%
Puerto Rican1.0%1.0%1.8%
Honduran0.4%0.4%0.3%
Cuban0.2%0.3%0.7%
Dominican0.2%—0.7%
Panamanian0.2%——
Colombian0.2%0.4%0.4%
Venezuelan0.2%——
Asian Indian0.5%0.5%1.4%
Chinese0.3%0.2%1.3%
Filipino0.2%0.3%0.9%
Korean0.2%—0.4%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
SC SD 21
South Carolina
United States
Median age
33.2
40.5
39.1
Age 18–24
14.8%
9.1%
9.2%
Age 65 and older
14.2%
18.9%
17.2%
Household economy
Measure
SC SD 21
South Carolina
United States
Median household income
$51,876
$69,324
$84,427
Poverty rate
24.8%
14.1%
12.5%
Bachelor's degree or higher (25+)
40.7%
32.1%
35.6%
Languages at home
Measure
SC SD 21
South Carolina
United States
Speaks a non-English language at home
8.7%
8.4%
22.3%
Spanish
4.3%
5.2%
13.6%
Other Indo-European
1.1%
0.8%
2.0%
Religious landscape
Measure
SC SD 21
South Carolina
United States
Catholic
—
8.0%
18.6%
Evangelical Protestant
—
28.6%
16.5%
Unclaimed / not counted
—
47.5%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
South Carolina 21st State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+34.4%
2008
+46.6%
2012
+48.7%
2016
+48.2%
2020
+51.5%
2024
+46.6%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
72.3%Harris32,823
25.8%Trump11,697
1.9%
D+46.6
R+4.9
D+48.0
45,376
D
75.0%Biden37,892
23.5%Trump11,874
1.5%
D+51.5
D+3.2
D+47.0
50,540
D
71.8%Clinton33,407
23.6%Trump10,965
4.6%
D+48.2
R+0.5
D+46.2
46,513
D
73.7%Obama35,739
25.0%Romney12,109
1.3%
D+48.7
D+2.2
D+44.9
48,475
D
72.7%Obama36,949
26.1%McCain13,281
1.2%
D+46.6
D+12.1
D+39.3
50,842
D
66.8%Kerry26,661
32.4%Bush12,919
0.9%
D+34.4
—
D+36.9
39,932
current representation
Current officeholders
DDarrell JacksonState Senate · 21
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+51.4, this district ranks among the most reliably one-sided in the state senate, suggesting a rural, low-density electorate where statewide competitive races rarely materialize.
Across the recorded series it reached a Democratic high of 51.5 points in 2020. Between 2020 and 2024 the district moved 4.9 points toward the Republican candidate; the 2024 margin was 46.6 points.
A population of 107,439, a 38% non-Hispanic-white share, and a median household income of $51,876 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 19 and State Senate District 33.
Akashic
Political twins — state-senate districts
The state-senate districts 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.
South Carolina 21st State Senate District. Akashic. https://akashic.app/sld-upper/45021/. Accessed May 20, 2026. License: CC BY 4.0.
How did South Carolina 21st State Senate District vote in 2024?
In 2024, South Carolina 21st State Senate District voted Democratic by 46.6 points (D+46.6), carried by the Democratic candidate. Out of 45,376 votes cast, 32,823 went Democratic and 11,697 went Republican.
How many people live in South Carolina 21st State Senate District?
South Carolina 21st State Senate District has a population of 107,439 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in South Carolina 21st State Senate District?
Median household income in South Carolina 21st State Senate District is $51,876 — below the national median of $80,734. The South Carolina state median is $69,324.
What is the political history of South Carolina 21st State Senate District?
Akashic tracks 6 presidential elections in South Carolina 21st State Senate District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
