Overview
- District ID
- id-sd-027
- State
- Idaho
- Chamber
- Upper chamber (state senate)
- District Code
- 027
- Land Area
- 4,521.8 sq mi
- Water Area
- 21.8 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing all 11 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 | 50,832 | 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
- 21,890
- Active Voters
- 21,890 (100.0%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 1,296 | 5.9% |
| Republican | 16,578 | 75.7% |
| Unaffiliated | 3,795 | 17.3% |
| Other parties | 221 | 1.0% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 2,367 (10.8%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 19,819 (90.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 11,728 (53.6%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 16,531 (75.5%) | 652 (3.0%) | 6,901 (31.5%) |
| 2017–2018 | 10,413 (47.6%) | 138 (0.6%) | 5,481 (25.0%) |
| 2015–2016 | 12,567 (57.4%) | 89 (0.4%) | 7,256 (33.1%) |
| 2013–2014 | 7,737 (35.3%) | 66 (0.3%) | 4,241 (19.4%) |
| 2011–2012 | 10,246 (46.8%) | 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
- 52,459
- Median Age
- 34.4
- Median Household Income
- $70,830 (± $3,695)
- High School Graduate or Higher (age 25+)
- 85.4%
- Bachelor's Degree or Higher (age 25+)
- 19.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 15,433 | 29.4% |
| 18 to 64 | 28,808 | 54.9% |
| 65 and over | 8,218 | 15.7% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 16,103 | 30.7% |
| White, not Hispanic | 33,835 | 64.5% |
| Black, not Hispanic | 159 | 0.3% |
| Asian, not Hispanic | 122 | 0.2% |
| American Indian / Alaska Native, not Hispanic | 340 | 0.6% |
| Native Hawaiian / Pacific Islander, not Hispanic | 4 | 0.0% |
| Some other race, not Hispanic | 419 | 0.8% |
| Two or more races, not Hispanic | 1,477 | 2.8% |
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
- 49,375
- Citizen Voting Age Population (CVAP)
- 34,094
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 36,224 | 73.4% |
| Hispanic | 13,147 | 26.6% |
| White | 34,688 | 70.3% |
| Black | 164 | 0.3% |
| Asian | 95 | 0.2% |
| American Indian / Alaska Native | 341 | 0.7% |
| Native Hawaiian / Pacific Islander | 5 | 0.0% |
| Two or More Races | 85 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 26,586 | 78.0% |
| Hispanic | 7,508 | 22.0% |
| White | 25,437 | 74.6% |
| Black | 110 | 0.3% |
| Asian | 214 | 0.6% |
| American Indian / Alaska Native | 755 | 2.2% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 88 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
