Colorado Congressional District 03

Congressional District Profile

Overview

District ID
CO-03
State
Colorado
District Number
03
Total Candidates
143
Election Cycles
2026, 2024, 2022, 2020, 2018, 2016, 2014, 2012, 2010, 2008, 2006, 2004, 2002, 2000, 1998, 1996, 1994, 1992, 1990, 1988, 1986, 1984, 1982, 1980

View office details for U.S. Representative - Colorado District 03

Voters

Registered Voters
573,458
Active Voters
517,707 (90.3%)

Party Registration

PartyVotersShare
Democratic116,14820.3%
Republican161,63428.2%
Unaffiliated281,48149.1%
Other parties14,1952.5%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–2026225,565 (39.3%)0 (0.0%)0 (0.0%)
2023–2024410,687 (71.6%)49,862 (8.7%)88,948 (15.5%)
2021–2022329,282 (57.4%)45,473 (7.9%)71,035 (12.4%)
2019–2020377,340 (65.8%)76,774 (13.4%)87,484 (15.3%)
2017–2018285,065 (49.7%)46,334 (8.1%)52,229 (9.1%)
2015–2016302,345 (52.7%)32,263 (5.6%)41,708 (7.3%)
2013–2014224,993 (39.2%)25,070 (4.4%)43,876 (7.7%)
2011–2012253,512 (44.2%)25,773 (4.5%)34,514 (6.0%)

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 Citizen Population
707,307
Citizen Voting Age Population (CVAP)
558,955

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic533,87975.5%
Hispanic173,42824.5%
White497,29370.3%
Black5,8550.8%
Asian4,4550.6%
American Indian / Alaska Native7,9961.1%
Native Hawaiian / Pacific Islander2990.0%
Two or More Races1,6330.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic441,13278.9%
Hispanic117,82321.1%
White413,58874.0%
Black7,0031.3%
Asian5,8131.0%
American Indian / Alaska Native13,7402.5%
Native Hawaiian / Pacific Islander2500.0%
Two or More Races9580.2%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation.

Candidates