Georgia State Senate District 21

State Legislative District Profile (Upper Chamber)

Overview

District ID
ga-sd-021
State
Georgia
Chamber
Upper chamber (state senate)
District Code
021
Land Area
361 sq mi
Water Area
5.36 sq mi

Boundary

Boundary of Georgia State Senate District 21

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Cherokee County302.64 sq mi83.8%71.9%
Fulton County58.29 sq mi16.1%11.1%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Milton city38.49 sq mi10.7%99.8%
Canton city16.80 sq mi4.7%90.3%
Alpharetta city13.56 sq mi3.8%50.4%
Ball Ground city6.33 sq mi1.8%98.6%
Roswell city6.24 sq mi1.7%15.3%
Holly Springs city2.23 sq mi0.6%30.5%
Waleska city1.58 sq mi0.4%92.5%
Nelson city0.89 sq mi0.2%55.5%

Showing all 8 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
GA District 7124,41964.6%16.3%53.3%
GA District 1168,15335.4%8.9%46.7%

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

Voters

Registered Voters
157,468
Active Voters
144,538 (91.8%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202616,862 (10.7%)<10 (—)0 (0.0%)
2023–2024119,100 (75.6%)7,146 (4.5%)24,722 (15.7%)
2021–202287,317 (55.5%)0 (0.0%)0 (0.0%)
2019–2020101,653 (64.6%)13,030 (8.3%)24,619 (15.6%)
2017–201875,950 (48.2%)4,909 (3.1%)15,376 (9.8%)
2015–201677,388 (49.1%)6,790 (4.3%)35,434 (22.5%)
2013–201444,560 (28.3%)1,357 (0.9%)14,199 (9.0%)
2011–201263,551 (40.4%)2,938 (1.9%)29,025 (18.4%)

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 01/05/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
202,412 (± 4,046)
Median Age
40.6
Median Household Income
$125,685 (± $4,241)
High School Graduate or Higher (age 25+)
92.6%
Bachelor's Degree or Higher (age 25+)
53.1%

Population by Age

GroupPeopleShare
Under 1850,46524.9%
18 to 64121,94160.2%
65 and over30,00614.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)23,76711.7%
White, not Hispanic139,86769.1%
Black, not Hispanic14,1917.0%
Asian, not Hispanic15,1647.5%
American Indian / Alaska Native, not Hispanic1200.1%
Native Hawaiian / Pacific Islander, not Hispanic30.0%
Some other race, not Hispanic1,6040.8%
Two or more races, not Hispanic7,6963.8%

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
186,061
Citizen Voting Age Population (CVAP)
137,865

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic168,61190.6%
Hispanic17,4519.4%
White140,56175.5%
Black14,1567.6%
Asian8,2234.4%
American Indian / Alaska Native1230.1%
Native Hawaiian / Pacific Islander10.0%
Two or More Races6490.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic128,44793.2%
Hispanic9,4136.8%
White109,94979.8%
Black11,3658.2%
Asian5,9014.3%
American Indian / Alaska Native9560.7%
Native Hawaiian / Pacific Islander10.0%
Two or More Races4000.3%

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