Overview
- District ID
- co-sd-028
- State
- Colorado
- Chamber
- Upper chamber (state senate)
- District Code
- 028
- Land Area
- 226.8 sq mi
- Water Area
- 0.62 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 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 6 | 153,978 | 94.3% | 21.3% | 65.0% |
| CO District 4 | 9,297 | 5.7% | 1.3% | 35.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 101,845
- Active Voters
- 91,078 (89.4%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 32,241 | 31.7% |
| Republican | 13,381 | 13.1% |
| Unaffiliated | 52,927 | 52.0% |
| Other parties | 3,296 | 3.2% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 26,868 (26.4%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 60,227 (59.1%) | 9,599 (9.4%) | 5,146 (5.1%) |
| 2021–2022 | 40,379 (39.6%) | 6,784 (6.7%) | 3,578 (3.5%) |
| 2019–2020 | 56,605 (55.6%) | 15,365 (15.1%) | 5,392 (5.3%) |
| 2017–2018 | 37,684 (37.0%) | 7,243 (7.1%) | 3,164 (3.1%) |
| 2015–2016 | 40,841 (40.1%) | 4,559 (4.5%) | 2,495 (2.4%) |
| 2013–2014 | 25,209 (24.8%) | 2,923 (2.9%) | 2,447 (2.4%) |
| 2011–2012 | 32,550 (32.0%) | 2,365 (2.3%) | 1,599 (1.6%) |
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
- 171,813 (± 2,767)
- Median Age
- 33.1
- Median Household Income
- $83,325 (± $3,431)
- High School Graduate or Higher (age 25+)
- 80.3%
- Bachelor's Degree or Higher (age 25+)
- 26.5%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 44,040 | 25.6% |
| 18 to 64 | 112,369 | 65.4% |
| 65 and over | 15,404 | 9.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 70,855 | 41.2% |
| White, not Hispanic | 51,674 | 30.1% |
| Black, not Hispanic | 28,104 | 16.4% |
| Asian, not Hispanic | 10,006 | 5.8% |
| American Indian / Alaska Native, not Hispanic | 360 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 769 | 0.4% |
| Some other race, not Hispanic | 1,089 | 0.6% |
| Two or more races, not Hispanic | 8,956 | 5.2% |
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
- 141,970
- Citizen Voting Age Population (CVAP)
- 100,990
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 93,078 | 65.6% |
| Hispanic | 48,889 | 34.4% |
| White | 51,873 | 36.5% |
| Black | 25,151 | 17.7% |
| Asian | 7,087 | 5.0% |
| American Indian / Alaska Native | 357 | 0.3% |
| Native Hawaiian / Pacific Islander | 528 | 0.4% |
| Two or More Races | 1,432 | 1.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 73,198 | 72.5% |
| Hispanic | 27,793 | 27.5% |
| White | 43,804 | 43.4% |
| Black | 19,974 | 19.8% |
| Asian | 7,154 | 7.1% |
| American Indian / Alaska Native | 1,605 | 1.6% |
| Native Hawaiian / Pacific Islander | 309 | 0.3% |
| Two or More Races | 849 | 0.8% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
