Texas State Senate District 31

State Legislative District Profile (Upper Chamber)

Overview

District ID
tx-sd-031
State
Texas
Chamber
Upper chamber (state senate)
District Code
031
Land Area
44,650.1 sq mi
Water Area
159.7 sq mi

Boundary

Boundary of Texas 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
Dallam County1503.13 sq mi3.4%100.0%
Gaines County1502.36 sq mi3.4%100.0%
Andrews County1500.72 sq mi3.4%100.0%
Oldham County1500.52 sq mi3.4%100.0%
Deaf Smith County1496.82 sq mi3.4%100.0%
Hartley County1461.95 sq mi3.3%100.0%
Schleicher County1310.64 sq mi2.9%100.0%
Upton County1241.32 sq mi2.8%100.0%
Reagan County1175.31 sq mi2.6%100.0%
Irion County1051.54 sq mi2.4%100.0%
Lipscomb County932.21 sq mi2.1%100.0%
Roberts County924.06 sq mi2.1%100.0%
Sterling County923.45 sq mi2.1%100.0%
Sherman County922.86 sq mi2.1%100.0%
Carson County920.23 sq mi2.1%100.0%
Hansford County919.81 sq mi2.1%100.0%
Ochiltree County917.68 sq mi2.1%100.0%
Martin County914.96 sq mi2.0%100.0%
Randall County912.71 sq mi2.0%100.0%
Coke County911.65 sq mi2.0%100.0%
Mitchell County911.09 sq mi2.0%100.0%
Armstrong County909.12 sq mi2.0%100.0%
Potter County908.39 sq mi2.0%100.0%
Hemphill County906.29 sq mi2.0%100.0%
Scurry County905.44 sq mi2.0%100.0%

Showing top 25 of 45 counties

Places

PlaceOverlapShare of district landShare of place land
Amarillo city102.30 sq mi0.2%98.7%
Midland city75.45 sq mi0.2%99.1%
West Odessa CDP62.13 sq mi0.1%100.0%
Odessa city51.08 sq mi0.1%98.1%
Monahans city28.92 sq mi0.1%100.0%
Big Spring city18.91 sq mi<0.1%98.8%
Gardendale CDP11.47 sq mi<0.1%100.0%
Hermleigh CDP9.05 sq mi<0.1%100.0%
Snyder city8.94 sq mi<0.1%100.0%
Borger city8.79 sq mi<0.1%97.3%
Canyon city7.85 sq mi<0.1%97.2%
Lake Colorado City CDP7.75 sq mi<0.1%100.0%
Southwest Sandhill CDP7.36 sq mi<0.1%100.0%
Hartley CDP6.97 sq mi<0.1%100.0%
Andrews city6.95 sq mi<0.1%100.0%
Hereford city6.30 sq mi<0.1%99.7%
Bushland CDP5.97 sq mi<0.1%100.0%
Dumas city5.53 sq mi<0.1%100.0%
Colorado City city5.33 sq mi<0.1%100.0%
Lamesa city5.11 sq mi<0.1%100.0%
Perryton city4.80 sq mi<0.1%100.0%
Dalhart city4.78 sq mi<0.1%100.0%
Seminole city3.80 sq mi<0.1%91.4%
Lipscomb CDP3.75 sq mi<0.1%100.0%
Tulia city3.56 sq mi<0.1%100.0%

Showing top 25 of 119 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
TX District 13371,35640.9%48.4%41.9%
TX District 11342,44037.7%44.6%12.5%
TX District 19160,67017.7%20.9%30.2%
TX District 2333,3183.7%4.3%15.4%

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

Voters

Registered Voters
505,437
Active Voters
478,041 (94.6%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–2024298,786 (59.1%)7,216 (1.4%)95,264 (18.8%)
2021–2022198,537 (39.3%)9,061 (1.8%)85,690 (17.0%)
2019–2020270,985 (53.6%)18,323 (3.6%)93,168 (18.4%)
2017–2018187,878 (37.2%)8,366 (1.7%)70,121 (13.9%)
2015–2016206,518 (40.9%)12,000 (2.4%)96,788 (19.1%)
2013–201494,564 (18.7%)5,849 (1.2%)51,305 (10.2%)
2011–2012164,024 (32.5%)4,573 (0.9%)44,772 (8.9%)

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 08/14/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
909,299 (± 422)
Median Age
34.1
Median Household Income
$72,260 (± $1,152)
High School Graduate or Higher (age 25+)
81.9%
Bachelor's Degree or Higher (age 25+)
22.5%

Population by Age

GroupPeopleShare
Under 18252,06527.7%
18 to 64538,07559.2%
65 and over119,15913.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)420,15546.2%
White, not Hispanic400,88444.1%
Black, not Hispanic43,4874.8%
Asian, not Hispanic15,8671.7%
American Indian / Alaska Native, not Hispanic2,0040.2%
Native Hawaiian / Pacific Islander, not Hispanic7370.1%
Some other race, not Hispanic2,8710.3%
Two or more races, not Hispanic23,2942.6%

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
832,811
Citizen Voting Age Population (CVAP)
590,056

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic473,77656.9%
Hispanic359,03543.1%
White401,40448.2%
Black40,8074.9%
Asian10,9691.3%
American Indian / Alaska Native2,0340.2%
Native Hawaiian / Pacific Islander6350.1%
Two or More Races1,8420.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic364,74061.8%
Hispanic225,31838.2%
White314,70253.3%
Black32,4195.5%
Asian8,8381.5%
American Indian / Alaska Native7,7671.3%
Native Hawaiian / Pacific Islander5340.1%
Two or More Races1,2630.2%

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