Colorado has eight congressional districts, each electing one member to the U.S. House of Representatives. The state added its eighth seat after the 2020 Census, and an independent citizens’ commission, not the legislature, draws the lines. The current delegation is split evenly, with four Democrats and four Republicans serving in the 119th Congress.
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 these seats saw significant movement in 2024. Boebert moved from the 3rd District to run in the 4th. Hurd won the open 3rd. Crank replaced retiring incumbent Doug Lamborn in the 5th. Evans flipped the 8th from Democratic control. You can confirm your representative through the U.S. House’s address lookup.1U.S. House of Representatives. Find Your Representative
What Each District Covers
The districts vary enormously in size. One covers a single city. Another sweeps across half the state. The commission had to reconcile equal population with Colorado’s uneven geography, which is why a district on the map can look nothing like its neighbor.
District 1: Denver
The most compact district in the state. It covers essentially all of Denver, plus the small enclaves of Glendale and Holly Hills. Urban, and reliably Democratic.
District 2: Boulder, Fort Collins, and the Northern Mountains
Anchored by Boulder and Fort Collins, the district reaches west into the mountains to include resort communities like Vail and Steamboat Springs. The combination of college towns and ski country produces a left-leaning electorate.
District 3: The Western Slope and Southern Colorado
Geographically the largest district. It stretches 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: Eastern Plains and Southern Front Range Suburbs
Covers the Eastern Plains and pulls in growing Front Range suburbs like Castle Rock, Parker, Highlands Ranch, and Loveland. Suburban growth has changed the district’s balance, but its agricultural identity remains strong.
District 5: Colorado Springs
Centered on Colorado Springs and El Paso County, including Fort Carson. It has been the most reliably Republican district in Colorado for decades.
District 6: Aurora and the Eastern Denver Suburbs
An inner ring around Denver’s east side. It includes all of Aurora along with Centennial and parts of Arapahoe County. Competitive on paper, but Democratic in recent cycles.
District 7: Lakewood, Arvada, and the Western Suburbs
Fills the western suburbs, including Lakewood, Arvada, Golden, and Broomfield, then extends into mountain counties like Chaffee and Teller. It has leaned Democratic since the current map took effect.
District 8: The I-25 Corridor North of Denver
The newest district, created after the 2020 Census. It runs along Interstate 25 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, and Donald Trump carried it by two points in 2024. Every major forecaster rated the 2026 race a toss-up as of early 2026.2Colorado Independent Redistricting Commissions. Preliminary Congressional Maps
How the Lines Are Drawn
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: 12 members, made up of four Democrats, four Republicans, and four unaffiliated voters. Sitting politicians and lobbyists cannot serve.
A final map requires at least eight of the twelve commissioners to vote yes, and at least two of those eight votes must come from unaffiliated members. That supermajority forces cross-party agreement. If the commission cannot clear the threshold, nonpartisan staff submit a map directly to the Colorado Supreme Court.3Colorado Independent Redistricting Commissions. Commissioner Selection Process
Commissioners are chosen through a layered process overseen by a panel of six retired appellate judges appointed by the Chief Justice. The panel works from a randomized applicant pool drawn off the voter rolls, and legislative leaders get to nominate a limited slate of candidates rather than picking commissioners directly. No single party controls the outcome.
The Criteria, in Priority Order
The constitution lists the rules the commission must follow, and the order controls when two of them conflict:
- Equal population across districts, with every deviation justified, and full contiguity within each district.
- Compliance with the federal Voting Rights Act, meaning maps cannot dilute the voting power of racial, ethnic, or language minority groups.
- Preservation of communities of interest and political subdivisions such as counties, cities, and towns, kept whole when possible.
- Geographic compactness.
- Competitiveness: after every higher criterion is satisfied, the commission should maximize the number of districts where either party has a realistic chance of winning.
One rule sits outside the ranking and applies absolutely: lines cannot be drawn to protect or punish any incumbent, candidate, or political party. Partisan gerrymandering is banned by the state constitution itself.450Constitutions.org. Colorado Constitution Article V Section 44.3 – Criteria for Determinations of Congressional Districts
Public Input and Court Review
Before adopting a final map, the commission holds public hearings across the state and accepts written testimony and voter-drawn community maps through its website. Once the commission adopts a final map, the Colorado Supreme Court reviews it for compliance with the constitutional criteria. The court approved the current map in 2022 after hearing objections from several interest groups.5Department of Justice. Redistricting Information
Finding Your District
The Colorado Secretary of State’s voter registration lookup at sos.state.co.us is the fastest option. Enter your address and it returns your congressional district, state legislative districts, and polling information. The U.S. House also maintains a national lookup at house.gov.1U.S. House of Representatives. Find Your Representative
Your congressional district affects more than federal races. Colorado’s State Board of Education members are elected by congressional district, so the same boundaries determine your vote for both offices.6Colorado Department of Education. Colorado Congressional District Information
What to Watch in 2026 and Beyond
All eight seats are on the ballot in 2026. The primary is June 30, 2026, and the general election is November 3, 2026. Candidates can reach the primary ballot through their party’s assembly process or by collecting petition signatures, with the petition filing deadline set for March 18, 2026.7Federal Election Commission. 2026 Congressional Primary Dates and Candidate Filing Deadlines for Ballot Access
The 8th District is the seat drawing the most national attention, given its EVEN Cook rating and the two-point Trump margin in 2024. Both parties are expected to invest heavily. The 3rd and 6th Districts could also see competitive races depending on candidate recruitment.
Whether Colorado picks up a ninth seat after the 2030 Census is uncertain. Projections through mid-2025 do not explicitly list Colorado among states expected to gain, though the broader Mountain West is projected to grow from 33 to 36 seats collectively, with Arizona, Idaho, and Utah appearing more likely to benefit. If Colorado does gain a seat, or if internal population shifts require substantial redrawing, the same Amendment Y process reconvenes, with new maps expected to take effect for the 2032 elections.