Oklahoma State Senate District 31

State Legislative District Profile (Upper Chamber)

Overview

District ID
ok-sd-031
State
Oklahoma
Chamber
Upper chamber (state senate)
District Code
031
Land Area
3,096.1 sq mi
Water Area
59.4 sq mi

Boundary

Boundary of Oklahoma State Senate District 31

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Jefferson County758.96 sq mi24.5%100.0%
Stephens County697.18 sq mi22.5%80.1%
Cotton County632.64 sq mi20.4%100.0%
Love County513.91 sq mi16.6%100.0%
Comanche County493.46 sq mi15.9%46.1%

Showing all 5 counties

Places

PlaceOverlapShare of district landShare of place land
Central High town51.92 sq mi1.7%98.1%
Lawton city43.38 sq mi1.4%53.1%
Duncan city22.21 sq mi0.7%51.7%
Burneyville CDP17.28 sq mi0.6%100.0%
Waurika city11.92 sq mi0.4%100.0%
Empire City town9.32 sq mi0.3%100.0%
Walters city8.05 sq mi0.3%99.7%
Comanche city4.24 sq mi0.1%83.5%
Marietta CDP2.55 sq mi0.1%100.0%
Thackerville town2.24 sq mi0.1%100.0%
Sunray CDP1.75 sq mi0.1%100.0%
Geronimo town1.49 sq mi<0.1%100.0%
Velma town1.35 sq mi<0.1%100.0%
Temple town1.29 sq mi<0.1%100.0%
Greenville CDP1.27 sq mi<0.1%100.0%
Ryan town0.94 sq mi<0.1%99.0%
Sterling town0.82 sq mi<0.1%100.0%
Ringling town0.78 sq mi<0.1%100.0%
Randlett town0.63 sq mi<0.1%100.0%
Cornish town0.60 sq mi<0.1%100.0%
Chattanooga town0.51 sq mi<0.1%98.1%
Devol town0.50 sq mi<0.1%99.9%
Hastings town0.48 sq mi<0.1%100.0%
Terral town0.43 sq mi<0.1%100.0%
Leon town0.27 sq mi<0.1%99.8%

Showing top 25 of 31 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
OK District 480,568100.0%10.2%100.0%

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

Voters

Registered Voters
47,497
Active Voters
38,555 (81.2%)

Party Registration

PartyVotersShare
Democratic11,38924.0%
Republican26,95456.7%
Unaffiliated00.0%
Other parties9,15419.3%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202429,652 (62.4%)0 (0.0%)0 (0.0%)
2021–202219,703 (41.5%)0 (0.0%)0 (0.0%)
2019–202026,573 (55.9%)0 (0.0%)0 (0.0%)
2017–201818,291 (38.5%)0 (0.0%)0 (0.0%)
2015–201620,689 (43.6%)0 (0.0%)0 (0.0%)
2013–201412,149 (25.6%)0 (0.0%)0 (0.0%)
2011–201216,011 (33.7%)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 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
80,799 (± 1,500)
Median Age
39.1
Median Household Income
$63,550 (± $3,277)
High School Graduate or Higher (age 25+)
89.8%
Bachelor's Degree or Higher (age 25+)
20.6%

Population by Age

GroupPeopleShare
Under 1818,18622.5%
18 to 6447,89459.3%
65 and over14,71918.2%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)9,12211.3%
White, not Hispanic52,29364.7%
Black, not Hispanic6,9988.7%
Asian, not Hispanic1,0861.3%
American Indian / Alaska Native, not Hispanic3,3514.1%
Native Hawaiian / Pacific Islander, not Hispanic2170.3%
Some other race, not Hispanic1790.2%
Two or more races, not Hispanic7,5539.3%

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
79,052
Citizen Voting Age Population (CVAP)
61,004

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic70,75989.5%
Hispanic8,29410.5%
White52,57166.5%
Black6,9328.8%
Asian7400.9%
American Indian / Alaska Native3,4264.3%
Native Hawaiian / Pacific Islander2040.3%
Two or More Races7611.0%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic55,86991.6%
Hispanic5,1388.4%
White42,36269.4%
Black6,76111.1%
Asian9311.5%
American Indian / Alaska Native5,6069.2%
Native Hawaiian / Pacific Islander1290.2%
Two or More Races4060.7%

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