South Dakota State Senate District 28

State Legislative District Profile (Upper Chamber)

Overview

District ID
sd-sd-028
State
South Dakota
Chamber
Upper chamber (state senate)
District Code
028
Land Area
14,525.4 sq mi
Water Area
254.8 sq mi

Boundary

Boundary of South Dakota State Senate District 28

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Perkins County2870.46 sq mi19.8%100.0%
Harding County2671.57 sq mi18.4%100.0%
Corson County2469.69 sq mi17.0%100.0%
Dewey County2302.38 sq mi15.9%100.0%
Butte County2250.01 sq mi15.5%100.0%
Ziebach County1961.25 sq mi13.5%100.0%

Showing all 6 counties

Places

PlaceOverlapShare of district landShare of place land
La Plant CDP9.45 sq mi0.1%100.0%
Belle Fourche city8.85 sq mi0.1%98.4%
North Eagle Butte CDP8.82 sq mi0.1%100.0%
Green Grass CDP8.13 sq mi0.1%100.0%
Bullhead CDP3.01 sq mi<0.1%100.0%
Whitehorse CDP2.74 sq mi<0.1%100.0%
Vale CDP1.49 sq mi<0.1%100.0%
Prairie City CDP1.42 sq mi<0.1%100.0%
Little Eagle CDP1.40 sq mi<0.1%100.0%
Eagle Butte city1.36 sq mi<0.1%100.0%
Lemmon city1.10 sq mi<0.1%100.0%
Newell city1.01 sq mi<0.1%100.0%
Bison town0.99 sq mi<0.1%100.0%
Kenel CDP0.98 sq mi<0.1%100.0%
Isabel town0.91 sq mi<0.1%100.0%
McIntosh city0.73 sq mi<0.1%100.0%
Cherry Creek CDP0.61 sq mi<0.1%100.0%
Timber Lake city0.61 sq mi<0.1%100.0%
Buffalo town0.55 sq mi<0.1%99.9%
Swift Bird CDP0.49 sq mi<0.1%99.9%
Wakpala CDP0.44 sq mi<0.1%100.0%
Lantry CDP0.42 sq mi<0.1%100.0%
McLaughlin city0.40 sq mi<0.1%100.0%
Dupree city0.39 sq mi<0.1%100.0%
Morristown town0.35 sq mi<0.1%99.9%

Showing top 25 of 29 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
SD At-Large25,943100.0%2.9%100.0%

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

Voters

Registered Voters
18,473
Active Voters
16,819 (91.0%)

Party Registration

PartyVotersShare
Democratic4,58424.8%
Republican9,50951.5%
Unaffiliated<10—
Other parties2,39813.0%
No party recorded<10—

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202411,033 (59.7%)0 (0.0%)0 (0.0%)
2021–20228,892 (48.1%)0 (0.0%)0 (0.0%)
2019–202010,315 (55.8%)0 (0.0%)0 (0.0%)
2017–20188,202 (44.4%)0 (0.0%)0 (0.0%)
2015–20168,413 (45.5%)0 (0.0%)0 (0.0%)
2013–20146,138 (33.2%)0 (0.0%)0 (0.0%)
2011–20127,390 (40.0%)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 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
26,213
Median Age
36.4
Median Household Income
$64,910 (± $5,041)
High School Graduate or Higher (age 25+)
89.5%
Bachelor's Degree or Higher (age 25+)
20.3%

Population by Age

GroupPeopleShare
Under 187,52728.7%
18 to 6414,19554.2%
65 and over4,49117.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)6132.3%
White, not Hispanic16,08061.3%
Black, not Hispanic440.2%
Asian, not Hispanic730.3%
American Indian / Alaska Native, not Hispanic8,17431.2%
Native Hawaiian / Pacific Islander, not Hispanic230.1%
Some other race, not Hispanic420.2%
Two or more races, not Hispanic1,1644.4%

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
26,143
Citizen Voting Age Population (CVAP)
18,627

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic25,55697.8%
Hispanic5882.2%
White16,30362.4%
Black370.1%
Asian600.2%
American Indian / Alaska Native8,17031.3%
Native Hawaiian / Pacific Islander190.1%
Two or More Races50.0%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic18,25298.0%
Hispanic3712.0%
White12,52367.2%
Black1811.0%
Asian450.2%
American Indian / Alaska Native5,48229.4%
Native Hawaiian / Pacific Islander140.1%
Two or More Races20.0%

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