Colorado has eight congressional districts, each electing one member of the U.S. House. The delegation is currently split evenly, with four Democrats and four Republicans serving in the 119th Congress. The map took effect for the 2022 elections after the state picked up its eighth seat following the 2020 Census, and the lines were drawn by an independent citizens’ commission rather than the state legislature.
Who Represents Each District
The eight members serving Colorado in the 119th Congress (2025–2027) are:
- District 1: Diana DeGette (D)
- District 2: Joe Neguse (D)
- District 3: Jeff Hurd (R)
- District 4: Lauren Boebert (R)
- District 5: Jeff Crank (R)
- District 6: Jason Crow (D)
- District 7: Brittany Pettersen (D)
- District 8: Gabe Evans (R)
Four of those seats shifted in 2024. Boebert moved from the 3rd District to run in the 4th. Hurd won the open 3rd. Crank succeeded retiring incumbent Doug Lamborn in the 5th. Evans flipped the 8th from Democratic control.1U.S. House of Representatives. Find Your Representative
What Each District Covers
The districts range from a single dense city to vast stretches of mountain and plain. Equal population is the top legal requirement, so the maps compress tightly where people cluster and spread out where they don’t.
Denver and the Northern Front Range (CD-1 and CD-2)
District 1 is the most compact in the state. It covers essentially all of Denver along with the small enclaves of Glendale and Holly Hills, is overwhelmingly urban, and votes reliably Democratic.
District 2 sits north and west, anchored by Boulder and Fort Collins and reaching into the mountains to include resort communities such as Vail and Steamboat Springs. The mix of college towns and ski country gives it a left-leaning tilt.
The Western Slope, Eastern Plains, and the Springs (CD-3, CD-4, CD-5)
District 3 is geographically the largest. It sweeps across most of the Western Slope and south through the San Luis Valley, taking in Grand Junction, Montrose, Durango, and Pueblo. The population is thin and spread across rugged terrain.
District 4 covers the Eastern Plains and reaches into Front Range suburbs including Castle Rock, Parker, Highlands Ranch, and Loveland. Suburban growth has not displaced the district’s rural and agricultural identity.
District 5 is centered on Colorado Springs and El Paso County, including Fort Carson. It has been the most reliably Republican district in the state for decades.
Suburban Denver and the I-25 Corridor (CD-6, CD-7, CD-8)
District 6 forms an inner-suburban ring on Denver’s eastern side, encompassing all of Aurora along with Centennial and parts of Arapahoe County.
District 7 fills the western suburbs — Lakewood, Arvada, Golden, and Broomfield — and extends into mountain counties such as Chaffee and Teller. Both the 6th and 7th have been competitive in theory but have leaned Democratic in recent cycles.
District 8 is the newest, created after the 2020 Census. It runs along the Interstate 25 corridor north of Denver through parts of Adams, Weld, and Larimer counties, with population centers in Brighton, Commerce City, Thornton, and Greeley. The Cook Political Report rates its partisan lean as EVEN based on recent presidential results.2Colorado Independent Redistricting Commissions. Preliminary Congressional Maps
Who Draws the Lines
Colorado voters took redistricting out of the legislature’s hands in 2018 by passing Amendment Y, which added Article V, Section 44 to the state constitution. The amendment created the Independent Congressional Redistricting Commission, a 12-member body made up of four Democrats, four Republicans, and four unaffiliated voters. No sitting politician or lobbyist can serve.
Commissioners are chosen through a layered process overseen by a panel of six retired appellate court judges, with random selection from the state’s voter rolls and limited input from legislative leaders. The design is meant to keep any one party or group from stacking the body.3Colorado Independent Redistricting Commissions. Commissioner Selection Process
Adopting a final map requires at least eight of the twelve commissioners to vote yes, and at least two of those eight must be unaffiliated. If the commission cannot reach that threshold, nonpartisan staff submit a map to the Colorado Supreme Court for approval instead.
The Rules the Commission Must Follow
The state constitution lists map-drawing criteria in priority order, and higher-priority criteria override lower ones in a conflict:
- Equal population. Districts must achieve precise mathematical equality, with every deviation justified. All districts must be contiguous.
- Voting Rights Act compliance. Maps cannot dilute the voting power of racial, ethnic, or language minority groups.
- Communities of interest and political subdivisions. Groups sharing policy concerns such as agriculture, urban neighborhoods, or common transportation and water needs should be kept together, and counties, cities, and towns should be kept whole when possible.
- Compactness. Districts should be as geographically compact as reasonably possible.
- Competitive elections. After satisfying everything above, the commission should maximize the number of districts where either party has a realistic chance of winning.
One rule sits outside that priority list and applies absolutely: lines cannot be drawn to protect or punish any incumbent, candidate, or political party. The constitution explicitly bars partisan gerrymandering.450Constitutions.org. Colorado Constitution Article V Section 44.3 – Criteria for Determinations of Congressional Districts
“Community of interest” is defined with unusual specificity. It covers groups sharing concerns about education, employment, environment, public health, transportation, or water, as long as they are geographically proximate, and it includes racial and ethnic groups. Relationships with political parties, incumbents, or candidates are explicitly excluded, which prevents parties from claiming partisan advantage under that label.5Colorado Independent Redistricting Commissions. Opportunities for Public Engagement
The Colorado Supreme Court reviews the final map for compliance with the constitutional criteria. The court approved the current map in 2022 after hearing objections from several interest groups.6Department of Justice. Redistricting Information
What’s On the Ballot in 2026
All eight House seats are up in 2026. Colorado conducts its elections primarily by mail. The key dates:
- Filing deadline for primary ballot access: March 18, 2026
- Primary election: June 30, 2026
- Independent candidate filing deadline: July 9, 2026
- General election: November 3, 2026
Candidates can reach the primary ballot either through the party assembly process or by collecting petition signatures. The March filing deadline applies to petition candidates seeking major-party primary access.7Federal Election Commission. 2026 Congressional Primary Dates and Candidate Filing Deadlines for Ballot Access
The 8th District is drawing the most national attention. With a Cook Partisan Voter Index of EVEN and razor-thin margins in recent elections — Donald Trump carried it by just two points in 2024 — both parties are expected to spend heavily there, and all major election forecasters rated the 2026 race a toss-up as of early 2026. The 3rd and 6th could also see competitive races depending on candidate recruitment and national conditions.
How to Find Your District
The quickest way to confirm which district you live in is the Colorado Secretary of State’s voter registration lookup at sos.state.co.us. Enter your address and the system returns your congressional district along with your state legislative districts and polling information. The U.S. House also maintains a national lookup at house.gov that identifies your representative by address.1U.S. House of Representatives. Find Your Representative