Utah State Senate District 21

State Legislative District Profile (Upper Chamber)

Overview

District ID
ut-sd-021
State
Utah
Chamber
Upper chamber (state senate)
District Code
021
Land Area
101.5 sq mi
Water Area
0.11 sq mi

Boundary

Boundary of Utah 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
Utah County101.50 sq mi100.0%5.1%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
American Fork city11.19 sq mi11.0%98.3%
Lehi city6.85 sq mi6.7%22.6%
Highland city6.32 sq mi6.2%72.7%
Pleasant Grove city6.31 sq mi6.2%68.6%
Lindon city3.05 sq mi3.0%36.6%
Alpine city3.04 sq mi3.0%38.2%
Cedar Hills city2.73 sq mi2.7%100.0%

Showing all 7 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
UT District 3110,40697.9%13.5%97.0%
UT District 42,4132.1%0.3%3.0%

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

Voters

Registered Voters
70,150
Active Voters
61,990 (88.4%)

Party Registration

PartyVotersShare
Democratic4,7286.7%
Republican43,45862.0%
Unaffiliated17,54725.0%
Other parties4,4176.3%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202621,355 (30.4%)0 (0.0%)0 (0.0%)
2023–202452,052 (74.2%)0 (0.0%)0 (0.0%)
2021–202236,787 (52.4%)0 (0.0%)0 (0.0%)
2019–202044,829 (63.9%)0 (0.0%)0 (0.0%)
2017–201829,636 (42.2%)0 (0.0%)0 (0.0%)
2015–201636,507 (52.0%)0 (0.0%)0 (0.0%)
2013–201422,241 (31.7%)0 (0.0%)0 (0.0%)
2011–201225,822 (36.8%)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 01/19/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
117,433 (± 1,973)
Median Age
28.8
Median Household Income
$120,879 (± $3,691)
High School Graduate or Higher (age 25+)
96.2%
Bachelor's Degree or Higher (age 25+)
49.1%

Population by Age

GroupPeopleShare
Under 1837,74532.1%
18 to 6468,06158.0%
65 and over11,6279.9%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)11,1779.5%
White, not Hispanic96,87682.5%
Black, not Hispanic7460.6%
Asian, not Hispanic2,1751.9%
American Indian / Alaska Native, not Hispanic5220.4%
Native Hawaiian / Pacific Islander, not Hispanic7960.7%
Some other race, not Hispanic5610.5%
Two or more races, not Hispanic4,5803.9%

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
113,577
Citizen Voting Age Population (CVAP)
76,533

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic104,60692.1%
Hispanic8,9777.9%
White97,71886.0%
Black7360.6%
Asian1,1741.0%
American Indian / Alaska Native5200.5%
Native Hawaiian / Pacific Islander7110.6%
Two or More Races1,3761.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic71,79293.8%
Hispanic4,7436.2%
White67,76988.5%
Black5690.7%
Asian1,7172.2%
American Indian / Alaska Native7140.9%
Native Hawaiian / Pacific Islander4180.5%
Two or More Races6130.8%

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