Overview
- District ID
- hi-sd-018
- State
- Hawaii
- Chamber
- Upper chamber (state senate)
- District Code
- 018
- Land Area
- 30.5 sq mi
- Water Area
- 0.01 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 | 30.55 sq mi | 100.0% | 5.1% |
Showing all 1 county
Places
Showing all 5 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 | 39,639 | 72.6% | 5.5% | 26.6% |
| HI District 2 | 14,932 | 27.4% | 2.0% | 73.4% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 33,017
- Active Voters
- 31,644 (95.8%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 21,934 (66.4%) | 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
- 50,799 (± 2,200)
- Median Age
- 44.2
- Median Household Income
- $123,157 (± $4,852)
- High School Graduate or Higher (age 25+)
- 95.0%
- Bachelor's Degree or Higher (age 25+)
- 36.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 9,519 | 18.7% |
| 18 to 64 | 30,362 | 59.8% |
| 65 and over | 10,918 | 21.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 4,050 | 8.0% |
| White, not Hispanic | 3,831 | 7.5% |
| Black, not Hispanic | 957 | 1.9% |
| Asian, not Hispanic | 27,540 | 54.2% |
| American Indian / Alaska Native, not Hispanic | 31 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 2,316 | 4.6% |
| Some other race, not Hispanic | 133 | 0.3% |
| Two or more races, not Hispanic | 11,941 | 23.5% |
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
- 49,333
- Citizen Voting Age Population (CVAP)
- 39,932
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 45,297 | 91.8% |
| Hispanic | 4,042 | 8.2% |
| White | 4,174 | 8.5% |
| Black | 982 | 2.0% |
| Asian | 26,388 | 53.5% |
| American Indian / Alaska Native | 30 | 0.1% |
| Native Hawaiian / Pacific Islander | 2,104 | 4.3% |
| Two or More Races | 7,875 | 16.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 37,165 | 93.1% |
| Hispanic | 2,768 | 6.9% |
| White | 3,560 | 8.9% |
| Black | 998 | 2.5% |
| Asian | 25,085 | 62.8% |
| American Indian / Alaska Native | 328 | 0.8% |
| Native Hawaiian / Pacific Islander | 1,723 | 4.3% |
| Two or More Races | 5,545 | 13.9% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
