Overview
- District ID
- co-hd-018
- State
- Colorado
- Chamber
- Lower chamber
- District Code
- 018
- Land Area
- 181.9 sq mi
- Water Area
- 0.54 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 5 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 5 | 86,452 | 99.3% | 12.0% | 99.4% |
| CO District 7 | 646 | 0.7% | 0.1% | 0.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 71,986
- Active Voters
- 60,339 (83.8%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 15,097 | 21.0% |
| Republican | 16,507 | 22.9% |
| Unaffiliated | 38,305 | 53.2% |
| Other parties | 2,077 | 2.9% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 26,112 (36.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 49,300 (68.5%) | 6,491 (9.0%) | 9,377 (13.0%) |
| 2021–2022 | 37,994 (52.8%) | 5,120 (7.1%) | 7,400 (10.3%) |
| 2019–2020 | 43,166 (60.0%) | 8,692 (12.1%) | 9,132 (12.7%) |
| 2017–2018 | 32,095 (44.6%) | 5,227 (7.3%) | 6,796 (9.4%) |
| 2015–2016 | 33,198 (46.1%) | 2,770 (3.8%) | 6,007 (8.3%) |
| 2013–2014 | 24,715 (34.3%) | 2,129 (3.0%) | 5,734 (8.0%) |
| 2011–2012 | 27,276 (37.9%) | 1,667 (2.3%) | 5,293 (7.4%) |
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
- 86,755 (± 2,326)
- Median Age
- 40.9
- Median Household Income
- $77,999 (± $3,799)
- High School Graduate or Higher (age 25+)
- 96.6%
- Bachelor's Degree or Higher (age 25+)
- 50.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 13,288 | 15.3% |
| 18 to 64 | 54,775 | 63.1% |
| 65 and over | 18,692 | 21.5% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 11,651 | 13.4% |
| White, not Hispanic | 64,870 | 74.8% |
| Black, not Hispanic | 2,569 | 3.0% |
| Asian, not Hispanic | 2,065 | 2.4% |
| American Indian / Alaska Native, not Hispanic | 188 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 225 | 0.3% |
| Some other race, not Hispanic | 739 | 0.9% |
| Two or more races, not Hispanic | 4,448 | 5.1% |
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
- 85,084
- Citizen Voting Age Population (CVAP)
- 71,798
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 73,960 | 86.9% |
| Hispanic | 11,119 | 13.1% |
| White | 65,919 | 77.5% |
| Black | 2,519 | 3.0% |
| Asian | 1,866 | 2.2% |
| American Indian / Alaska Native | 188 | 0.2% |
| Native Hawaiian / Pacific Islander | 218 | 0.3% |
| Two or More Races | 765 | 0.9% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 63,903 | 89.0% |
| Hispanic | 7,897 | 11.0% |
| White | 57,497 | 80.1% |
| Black | 2,667 | 3.7% |
| Asian | 2,353 | 3.3% |
| American Indian / Alaska Native | 866 | 1.2% |
| Native Hawaiian / Pacific Islander | 216 | 0.3% |
| Two or More Races | 336 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
