Overview
- District ID
- co-hd-045
- State
- Colorado
- Chamber
- Lower chamber
- District Code
- 045
- Land Area
- 79.2 sq mi
- Water Area
- 0.04 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 |
|---|
| Douglas County | 79.30 sq mi | 100.0% | 9.4% |
Showing all 1 county
Places
Showing all 3 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 |
|---|
| CO District 4 | 89,205 | 100.0% | 12.4% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 80,384
- Active Voters
- 72,192 (89.8%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 11,469 | 14.3% |
| Republican | 26,572 | 33.1% |
| Unaffiliated | 40,695 | 50.6% |
| Other parties | 1,648 | 2.1% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 32,432 (40.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 62,643 (77.9%) | 5,312 (6.6%) | 14,216 (17.7%) |
| 2021–2022 | 48,402 (60.2%) | 3,697 (4.6%) | 10,092 (12.6%) |
| 2019–2020 | 54,468 (67.8%) | 7,136 (8.9%) | 12,980 (16.1%) |
| 2017–2018 | 39,712 (49.4%) | 3,693 (4.6%) | 6,909 (8.6%) |
| 2015–2016 | 41,139 (51.2%) | 1,803 (2.2%) | 5,584 (6.9%) |
| 2013–2014 | 28,805 (35.8%) | 1,469 (1.8%) | 5,818 (7.2%) |
| 2011–2012 | 32,422 (40.3%) | 1,114 (1.4%) | 3,686 (4.6%) |
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 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 96,648 (± 1,435)
- Median Age
- 38.2
- Median Household Income
- $151,430 (± $3,296)
- High School Graduate or Higher (age 25+)
- 97.2%
- Bachelor's Degree or Higher (age 25+)
- 57.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 24,309 | 25.2% |
| 18 to 64 | 60,006 | 62.1% |
| 65 and over | 12,333 | 12.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 11,086 | 11.5% |
| White, not Hispanic | 75,821 | 78.5% |
| Black, not Hispanic | 720 | 0.7% |
| Asian, not Hispanic | 2,624 | 2.7% |
| American Indian / Alaska Native, not Hispanic | 112 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 120 | 0.1% |
| Some other race, not Hispanic | 607 | 0.6% |
| Two or more races, not Hispanic | 5,558 | 5.8% |
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
- 94,465
- Citizen Voting Age Population (CVAP)
- 70,337
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 84,408 | 89.4% |
| Hispanic | 10,055 | 10.6% |
| White | 77,586 | 82.1% |
| Black | 634 | 0.7% |
| Asian | 2,306 | 2.4% |
| American Indian / Alaska Native | 112 | 0.1% |
| Native Hawaiian / Pacific Islander | 120 | 0.1% |
| Two or More Races | 658 | 0.7% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 63,414 | 90.2% |
| Hispanic | 6,926 | 9.8% |
| White | 58,666 | 83.4% |
| Black | 1,164 | 1.7% |
| Asian | 2,376 | 3.4% |
| American Indian / Alaska Native | 511 | 0.7% |
| Native Hawaiian / Pacific Islander | 114 | 0.2% |
| Two or More Races | 600 | 0.9% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
