Hawaii State Senate District 1

State Legislative District Profile (Upper Chamber)

Overview

District ID
hi-sd-001
State
Hawaii
Chamber
Upper chamber (state senate)
District Code
001
Land Area
359 sq mi
Water Area
67.4 sq mi

Boundary

Boundary of Hawaii State Senate District 1

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Hawaii County358.98 sq mi100.0%8.9%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Hilo CDP53.62 sq mi14.9%100.0%
Mountain View CDP4.07 sq mi1.1%7.4%
Papaikou CDP1.45 sq mi0.4%100.0%
Wainaku CDP1.32 sq mi0.4%100.0%
Pepeekeo CDP1.10 sq mi0.3%100.0%
Paukaa CDP0.33 sq mi0.1%100.0%

Showing all 6 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
HI District 250,485100.0%6.9%100.0%

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

Voters

Registered Voters
34,036
Active Voters
31,180 (91.6%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202422,110 (65.0%)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 07/18/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
57,636 (± 2,254)
Median Age
42.6
Median Household Income
$80,487 (± $6,559)
High School Graduate or Higher (age 25+)
93.6%
Bachelor's Degree or Higher (age 25+)
33.7%

Population by Age

GroupPeopleShare
Under 1811,58220.1%
18 to 6433,35857.9%
65 and over12,69622.0%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)6,15010.7%
White, not Hispanic8,79715.3%
Black, not Hispanic4460.8%
Asian, not Hispanic18,81832.6%
American Indian / Alaska Native, not Hispanic240.0%
Native Hawaiian / Pacific Islander, not Hispanic7,72113.4%
Some other race, not Hispanic3000.5%
Two or more races, not Hispanic15,38026.7%

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
54,381
Citizen Voting Age Population (CVAP)
43,115

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic48,29488.8%
Hispanic6,08311.2%
White8,74116.1%
Black4470.8%
Asian17,00831.3%
American Indian / Alaska Native230.0%
Native Hawaiian / Pacific Islander6,84112.6%
Two or More Races12,01722.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic39,30791.2%
Hispanic3,8108.8%
White7,84718.2%
Black5731.3%
Asian17,23940.0%
American Indian / Alaska Native2210.5%
Native Hawaiian / Pacific Islander5,57712.9%
Two or More Races7,86718.2%

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