Overview
- District ID
- co-sd-013
- State
- Colorado
- Chamber
- Upper chamber (state senate)
- District Code
- 013
- Land Area
- 191 sq mi
- Water Area
- 1.83 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 |
|---|
| Weld County | 154.85 sq mi | 81.1% | 3.9% |
| Adams County | 36.10 sq mi | 18.9% | 3.1% |
Showing all 2 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 |
|---|
| CO District 8 | 161,486 | 100.0% | 22.4% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 104,165
- Active Voters
- 92,922 (89.2%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 22,477 | 21.6% |
| Republican | 23,518 | 22.6% |
| Unaffiliated | 54,712 | 52.5% |
| Other parties | 3,458 | 3.3% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 26,619 (25.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 64,884 (62.3%) | 6,178 (5.9%) | 10,189 (9.8%) |
| 2021–2022 | 44,507 (42.7%) | 4,756 (4.6%) | 7,146 (6.9%) |
| 2019–2020 | 60,342 (57.9%) | 10,554 (10.1%) | 10,208 (9.8%) |
| 2017–2018 | 43,043 (41.3%) | 5,459 (5.2%) | 5,473 (5.3%) |
| 2015–2016 | 46,564 (44.7%) | 3,360 (3.2%) | 4,257 (4.1%) |
| 2013–2014 | 29,581 (28.4%) | 2,775 (2.7%) | 4,920 (4.7%) |
| 2011–2012 | 36,971 (35.5%) | 2,208 (2.1%) | 3,108 (3.0%) |
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 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 165,779 (± 2,334)
- Median Age
- 32.1
- Median Household Income
- $73,294 (± $2,008)
- High School Graduate or Higher (age 25+)
- 81.5%
- Bachelor's Degree or Higher (age 25+)
- 21.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 42,935 | 25.9% |
| 18 to 64 | 104,462 | 63.0% |
| 65 and over | 18,382 | 11.1% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 76,235 | 46.0% |
| White, not Hispanic | 77,094 | 46.5% |
| Black, not Hispanic | 3,899 | 2.4% |
| Asian, not Hispanic | 2,064 | 1.2% |
| American Indian / Alaska Native, not Hispanic | 264 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 286 | 0.2% |
| Some other race, not Hispanic | 1,052 | 0.6% |
| Two or more races, not Hispanic | 4,885 | 2.9% |
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
- 152,113
- Citizen Voting Age Population (CVAP)
- 110,320
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 87,638 | 57.6% |
| Hispanic | 64,477 | 42.4% |
| White | 78,352 | 51.5% |
| Black | 3,330 | 2.2% |
| Asian | 1,563 | 1.0% |
| American Indian / Alaska Native | 264 | 0.2% |
| Native Hawaiian / Pacific Islander | 174 | 0.1% |
| Two or More Races | 504 | 0.3% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 70,657 | 64.0% |
| Hispanic | 39,663 | 36.0% |
| White | 64,380 | 58.4% |
| Black | 2,713 | 2.5% |
| Asian | 1,928 | 1.7% |
| American Indian / Alaska Native | 1,247 | 1.1% |
| Native Hawaiian / Pacific Islander | 149 | 0.1% |
| Two or More Races | 335 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
