Overview
- District ID
- id-sd-004
- State
- Idaho
- Chamber
- Upper chamber (state senate)
- District Code
- 004
- Land Area
- 17.9 sq mi
- Water Area
- 1.61 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 |
|---|
| Kootenai County | 17.95 sq mi | 100.0% | 1.4% |
Showing all 1 county
Places
Showing all 2 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 1 | 52,384 | 100.0% | 5.7% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 29,156
- Active Voters
- 29,156 (100.0%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 3,749 | 12.9% |
| Republican | 17,277 | 59.3% |
| Unaffiliated | 7,641 | 26.2% |
| Other parties | 489 | 1.7% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 9,230 (31.7%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 25,114 (86.1%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 16,146 (55.4%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 19,807 (67.9%) | 3,165 (10.9%) | 5,199 (17.8%) |
| 2017–2018 | 12,622 (43.3%) | 997 (3.4%) | 3,513 (12.0%) |
| 2015–2016 | 13,074 (44.8%) | 420 (1.4%) | 4,611 (15.8%) |
| 2013–2014 | 7,165 (24.6%) | 300 (1.0%) | 2,197 (7.5%) |
| 2011–2012 | 9,826 (33.7%) | 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 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
- 53,029 (± 1,191)
- Median Age
- 40.1
- Median Household Income
- $71,797 (± $2,167)
- High School Graduate or Higher (age 25+)
- 95.9%
- Bachelor's Degree or Higher (age 25+)
- 30.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 11,531 | 21.7% |
| 18 to 64 | 30,947 | 58.4% |
| 65 and over | 10,551 | 19.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 2,730 | 5.1% |
| White, not Hispanic | 45,624 | 86.0% |
| Black, not Hispanic | 296 | 0.6% |
| Asian, not Hispanic | 407 | 0.8% |
| American Indian / Alaska Native, not Hispanic | 237 | 0.4% |
| Native Hawaiian / Pacific Islander, not Hispanic | 18 | 0.0% |
| Some other race, not Hispanic | 743 | 1.4% |
| Two or more races, not Hispanic | 2,974 | 5.6% |
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
- 52,500
- Citizen Voting Age Population (CVAP)
- 40,963
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 49,932 | 95.1% |
| Hispanic | 2,567 | 4.9% |
| White | 46,675 | 88.9% |
| Black | 377 | 0.7% |
| Asian | 383 | 0.7% |
| American Indian / Alaska Native | 236 | 0.4% |
| Native Hawaiian / Pacific Islander | 18 | 0.0% |
| Two or More Races | 481 | 0.9% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 38,989 | 95.2% |
| Hispanic | 1,975 | 4.8% |
| White | 36,808 | 89.9% |
| Black | 462 | 1.1% |
| Asian | 589 | 1.4% |
| American Indian / Alaska Native | 865 | 2.1% |
| Native Hawaiian / Pacific Islander | 17 | 0.0% |
| Two or More Races | 254 | 0.6% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
