Overview
- District ID
- id-sd-030
- State
- Idaho
- Chamber
- Upper chamber (state senate)
- District Code
- 030
- Land Area
- 4,330.2 sq mi
- Water Area
- 28.5 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 13 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 |
|---|
| ID District 2 | 50,566 | 100.0% | 5.5% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 24,706
- Active Voters
- 24,706 (100.0%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 1,574 | 6.4% |
| Republican | 17,767 | 71.9% |
| Unaffiliated | 5,089 | 20.6% |
| Other parties | 276 | 1.1% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,085 (16.5%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 21,859 (88.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 12,923 (52.3%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 18,369 (74.4%) | 1,081 (4.4%) | 7,428 (30.1%) |
| 2017–2018 | 11,682 (47.3%) | 278 (1.1%) | 6,257 (25.3%) |
| 2015–2016 | 13,533 (54.8%) | 106 (0.4%) | 6,461 (26.2%) |
| 2013–2014 | 8,484 (34.3%) | 130 (0.5%) | 4,729 (19.1%) |
| 2011–2012 | 11,361 (46.0%) | 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 01/12/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 52,348
- Median Age
- 35.3
- Median Household Income
- $76,167 (± $4,532)
- High School Graduate or Higher (age 25+)
- 88.9%
- Bachelor's Degree or Higher (age 25+)
- 21.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 15,116 | 28.9% |
| 18 to 64 | 29,150 | 55.7% |
| 65 and over | 8,082 | 15.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 9,002 | 17.2% |
| White, not Hispanic | 38,977 | 74.5% |
| Black, not Hispanic | 96 | 0.2% |
| Asian, not Hispanic | 144 | 0.3% |
| American Indian / Alaska Native, not Hispanic | 2,321 | 4.4% |
| Native Hawaiian / Pacific Islander, not Hispanic | 22 | 0.0% |
| Some other race, not Hispanic | 94 | 0.2% |
| Two or more races, not Hispanic | 1,692 | 3.2% |
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
- 50,742
- Citizen Voting Age Population (CVAP)
- 35,640
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 43,256 | 85.2% |
| Hispanic | 7,484 | 14.7% |
| White | 39,415 | 77.7% |
| Black | 97 | 0.2% |
| Asian | 139 | 0.3% |
| American Indian / Alaska Native | 2,322 | 4.6% |
| Native Hawaiian / Pacific Islander | 24 | 0.0% |
| Two or More Races | 243 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 31,487 | 88.3% |
| Hispanic | 4,152 | 11.6% |
| White | 28,808 | 80.8% |
| Black | 185 | 0.5% |
| Asian | 335 | 0.9% |
| American Indian / Alaska Native | 2,035 | 5.7% |
| Native Hawaiian / Pacific Islander | 13 | 0.0% |
| Two or More Races | 102 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
