South Carolina State Senate District 20

State Legislative District Profile (Upper Chamber)

Overview

District ID
sc-sd-020
State
South Carolina
Chamber
Upper chamber (state senate)
District Code
020
Land Area
44.3 sq mi
Water Area
5.9 sq mi

Boundary

Boundary of South Carolina State Senate District 20

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Charleston County44.25 sq mi100.0%4.8%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Charleston city33.36 sq mi75.4%28.9%
James Island town2.74 sq mi6.2%56.6%

Showing all 2 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
SC District 680,62175.3%11.0%67.5%
SC District 126,43724.7%3.6%32.5%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
67,529
Active Voters
67,529 (100.0%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202453,232 (78.8%)0 (0.0%)0 (0.0%)
2021–202210,193 (15.1%)0 (0.0%)0 (0.0%)
2019–202014,450 (21.4%)0 (0.0%)0 (0.0%)
2017–201822,535 (33.4%)0 (0.0%)0 (0.0%)
2015–20165,177 (7.7%)0 (0.0%)0 (0.0%)
2013–2014321 (0.5%)0 (0.0%)0 (0.0%)
2011–20121,149 (1.7%)0 (0.0%)0 (0.0%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 09/11/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
108,506 (± 2,700)
Median Age
35.9
Median Household Income
$88,367 (± $3,632)
High School Graduate or Higher (age 25+)
95.4%
Bachelor's Degree or Higher (age 25+)
54.9%

Population by Age

GroupPeopleShare
Under 1818,03916.6%
18 to 6472,28766.6%
65 and over18,18016.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)6,3545.9%
White, not Hispanic75,58269.7%
Black, not Hispanic19,42417.9%
Asian, not Hispanic2,2592.1%
American Indian / Alaska Native, not Hispanic660.1%
Native Hawaiian / Pacific Islander, not Hispanic1580.1%
Some other race, not Hispanic1680.2%
Two or more races, not Hispanic4,4954.1%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
104,963
Citizen Voting Age Population (CVAP)
87,154

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic99,95395.2%
Hispanic5,0074.8%
White75,51471.9%
Black19,20918.3%
Asian1,6731.6%
American Indian / Alaska Native670.1%
Native Hawaiian / Pacific Islander1120.1%
Two or More Races3240.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic84,19396.6%
Hispanic2,9603.4%
White64,88774.5%
Black16,54919.0%
Asian1,8932.2%
American Indian / Alaska Native6270.7%
Native Hawaiian / Pacific Islander990.1%
Two or More Races1840.2%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).