Overview
- District ID
- hi-sd-021
- State
- Hawaii
- Chamber
- Upper chamber (state senate)
- District Code
- 021
- Land Area
- 23.8 sq mi
- Water Area
- 11.7 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
| County | Overlap | Share of district land | Share of county land |
|---|
| Honolulu County | 23.75 sq mi | 100.0% | 4.0% |
Showing all 1 county
Places
Showing all 7 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| HI District 1 | 37,412 | 62.9% | 5.2% | 51.1% |
| HI District 2 | 22,074 | 37.1% | 3.0% | 48.9% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 32,489
- Active Voters
- 30,572 (94.1%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 19,716 (60.7%) | 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 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
- 62,867 (± 2,965)
- Median Age
- 34.7
- Median Household Income
- $117,119 (± $4,599)
- High School Graduate or Higher (age 25+)
- 94.1%
- Bachelor's Degree or Higher (age 25+)
- 29.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 17,194 | 27.3% |
| 18 to 64 | 38,313 | 60.9% |
| 65 and over | 7,360 | 11.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 9,540 | 15.2% |
| White, not Hispanic | 7,935 | 12.6% |
| Black, not Hispanic | 1,872 | 3.0% |
| Asian, not Hispanic | 19,415 | 30.9% |
| American Indian / Alaska Native, not Hispanic | 103 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 7,396 | 11.8% |
| Some other race, not Hispanic | 95 | 0.2% |
| Two or more races, not Hispanic | 16,511 | 26.3% |
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
- 60,139
- Citizen Voting Age Population (CVAP)
- 43,264
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 50,711 | 84.3% |
| Hispanic | 9,428 | 15.7% |
| White | 7,990 | 13.3% |
| Black | 1,773 | 2.9% |
| Asian | 17,915 | 29.8% |
| American Indian / Alaska Native | 96 | 0.2% |
| Native Hawaiian / Pacific Islander | 6,804 | 11.3% |
| Two or More Races | 12,142 | 20.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 38,114 | 88.1% |
| Hispanic | 5,154 | 11.9% |
| White | 6,580 | 15.2% |
| Black | 1,760 | 4.1% |
| Asian | 16,528 | 38.2% |
| American Indian / Alaska Native | 283 | 0.7% |
| Native Hawaiian / Pacific Islander | 5,229 | 12.1% |
| Two or More Races | 7,807 | 18.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
