Overview
- District ID
- id-sd-008
- State
- Idaho
- Chamber
- Upper chamber (state senate)
- District Code
- 008
- Land Area
- 13,561.7 sq mi
- Water Area
- 118.6 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 4 counties
Places
Showing all 22 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 | 32,941 | 63.0% | 3.6% | 59.0% |
| ID District 1 | 19,356 | 37.0% | 2.1% | 41.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 29,424
- Active Voters
- 29,424 (100.0%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 2,837 | 9.6% |
| Republican | 19,679 | 66.9% |
| Unaffiliated | 6,500 | 22.1% |
| Other parties | 408 | 1.4% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 8,131 (27.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 25,543 (86.8%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 17,062 (58.0%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 21,462 (72.9%) | 2,476 (8.4%) | 9,025 (30.7%) |
| 2017–2018 | 15,035 (51.1%) | 707 (2.4%) | 5,863 (19.9%) |
| 2015–2016 | 15,484 (52.6%) | 392 (1.3%) | 6,956 (23.6%) |
| 2013–2014 | 9,941 (33.8%) | 321 (1.1%) | 4,224 (14.4%) |
| 2011–2012 | 12,135 (41.2%) | 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
- 54,453
- Median Age
- 40.8
- Median Household Income
- $69,767 (± $4,282)
- High School Graduate or Higher (age 25+)
- 90.6%
- Bachelor's Degree or Higher (age 25+)
- 28.9%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 11,324 | 20.8% |
| 18 to 64 | 31,469 | 57.8% |
| 65 and over | 11,660 | 21.4% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 6,627 | 12.2% |
| White, not Hispanic | 42,394 | 77.9% |
| Black, not Hispanic | 866 | 1.6% |
| Asian, not Hispanic | 1,063 | 2.0% |
| American Indian / Alaska Native, not Hispanic | 244 | 0.4% |
| Native Hawaiian / Pacific Islander, not Hispanic | 129 | 0.2% |
| Some other race, not Hispanic | 538 | 1.0% |
| Two or more races, not Hispanic | 2,592 | 4.8% |
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
- 52,795
- Citizen Voting Age Population (CVAP)
- 41,506
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 47,269 | 89.5% |
| Hispanic | 5,528 | 10.5% |
| White | 43,410 | 82.2% |
| Black | 851 | 1.6% |
| Asian | 824 | 1.6% |
| American Indian / Alaska Native | 242 | 0.5% |
| Native Hawaiian / Pacific Islander | 131 | 0.2% |
| Two or More Races | 240 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 38,220 | 92.1% |
| Hispanic | 3,288 | 7.9% |
| White | 35,466 | 85.4% |
| Black | 779 | 1.9% |
| Asian | 931 | 2.2% |
| American Indian / Alaska Native | 819 | 2.0% |
| Native Hawaiian / Pacific Islander | 97 | 0.2% |
| Two or More Races | 195 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
