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Colorado's 4th Congressional District (CO-4)

Last updated · 7 sources

Lauren Boebert, a Republican, has represented the district since 2025.

The district includes all or part of 21 counties (6 in part).

According to the Census Bureau's 2020–2024 American Community Survey 5-year estimates, the district has a population of 756,186, a median household income of $115,239, and a median age of 39.4. Of residents 25 and older, 48.1% hold a bachelor's degree or higher.

Representative

Official portrait of Lauren Boebert, U.S. Representative for Colorado's 4th District
Lauren Boebert

U.S. Representative for Colorado's 4th District · Republican

ProfileSchedule this week

2026 election

Boebert has filed with the FEC to run for this seat in 2026.

5 candidates have reported raising money for the 2026 CO-4 race to the FEC.

Election Day: Tuesday, November 3, 2026

Candidates for CO-4 in 2026 who reported raising money to the FEC
CandidatePartyRaisedCash on handThrough
Eileen LaubacherDemocratic$10,349,940$3,610,909Jun 30
Lauren Boebert (incumbent)Republican$1,010,297$247,202Jun 30
Jenna Michalik PrestonDemocratic$100,509$0Aug 15
John J. Padora Jr.Democratic$93,970$7,331Jun 30
Timothy Veldhuizen$20,506-$1,995Sep 30

Includes primary candidates; FEC filings do not record primary results. FEC race page

District profile

Population
756,186
Median household income
$115,239
Median age
39.4
Bachelor's degree or higher
48.1%

Census Bureau, 2020–2024 American Community Survey 5-year estimates

Places and ZIP codes

CO-4 covers all of 126 places, the largest Highlands Ranch, Castle Rock, and Loveland, and part of 3 more places, Centennial, Littleton, and Bennett.

Acres Green, Aetna Estates, Akron, Amherst, Arapahoe, Arriba, Atwood, Ault, Bennett (part), Bethune, Blue Sky, Brandon, Brick Center, Briggsdale, Brush, Burlington, Byers, Calhan, Campo, Castle Pines, Castle Pines Village, Castle Rock, Centennial (part), Cheyenne Wells, Comanche Creek, Cope, Crook, Crowley, Deer Trail, Eads, Eaton, Eckley, Elbert, Elizabeth, Flagler, Fleming, Fort Morgan, Franktown, Genoa, Granada, Grand View Estates, Grover, Hartman, Hasty, Haswell, Haxtun, Highlands Ranch, Hillrose, Holly, Holyoke, Hudson, Hugo, Idalia, Iliff, Jackson Lake, Joes, Julesburg, Keenesburg, Kiowa, Kirk, Kit Carson, Laird, Lamar, Larkspur, Las Animas, Limon, Littleton (part), Log Lane Village, Lone Tree, Louviers, Loveland, Matheson, McClave, Meridian, Meridian Village, Merino, Morgan Heights, Nunn, Olney Springs, Orchard, Ordway, Otis, Ovid, Padroni, Paoli, Parker, Peetz, Peoria, Perry Park, Pierce, Ponderosa Park, Pritchett, Ramah, Raymer (New Raymer), Roxborough Park, Saddle Ridge, Sedalia, Sedgwick, Seibert, Severance, Sheridan Lake, Sierra Ridge, Simla, Snyder, Springfield, Stepping Stone, Sterling, Sterling Ranch, Stonegate, Strasburg, Stratton, Sugar City, The Pinery, Towner, Trail Side, Two Buttes, Vernon, Vilas, Vona, Walsh, Watkins, Weldona, Wellington, Westcreek, Wiggins, Wiley, Windsor, Wray, Yuma

CO-4 covers all of 104 ZIP codes and part of 42 more.

69168 (part), 80013 (part), 80015 (part), 80016 (part), 80018 (part), 80022 (part), 80101, 80102 (part), 80103, 80104, 80105, 80106 (part), 80107, 80108, 80109, 80112 (part), 80116, 80117, 80118, 80120 (part), 80124, 80125, 80126, 80129 (part), 80130, 80131, 80134, 80135 (part), 80136, 80137 (part), 80138 (part), 80524 (part), 80526 (part), 80528 (part), 80534 (part), 80537 (part), 80538 (part), 80546, 80547 (part), 80549 (part), 80550 (part), 80603 (part), 80610, 80611, 80612 (part), 80615 (part), 80622, 80624 (part), 80631 (part), 80634 (part), 80642 (part), 80643, 80644 (part), 80645 (part), 80648, 80649, 80650, 80652, 80653, 80654, 80701, 80705, 80720, 80721, 80722, 80723, 80726, 80727, 80728, 80729, 80731, 80732, 80733, 80734, 80735, 80736, 80737 (part), 80740, 80741, 80742, 80743, 80744, 80745, 80746, 80747, 80749, 80750, 80751, 80754, 80755, 80757, 80758, 80759, 80801, 80802, 80804, 80805, 80807, 80808 (part), 80810, 80812, 80815, 80818, 80821, 80822, 80823, 80824, 80825, 80826, 80828, 80830, 80831 (part), 80832, 80833, 80834, 80835, 80836, 80861, 80862, 80864 (part), 81021, 81029, 81033, 81036, 81039 (part), 81041, 81043, 81044, 81045, 81047, 81050 (part), 81052, 81054 (part), 81057, 81058 (part), 81062, 81063, 81064 (part), 81071, 81073, 81076, 81084, 81087, 81090, 81092, 82082 (part)

Colorado senators

Neighboring districts

  • CO-1 · Diana DeGette (D)
  • CO-2 · Joe Neguse (D)
  • CO-3 · Jeff Hurd (R)
  • CO-5 · Jeff Crank (R)
  • CO-6 · Jason Crow (D)
  • CO-7 · Brittany Pettersen (D)
  • CO-8 · Gabe Evans (R)
  • KS-1 · Tracey Mann (R)
  • NE-3 · Adrian Smith (R)
  • NM-3 · Teresa Leger Fernández (D)
  • OK-3 · Frank Lucas (R)
  • WY-AL · Harriet Hageman (R)

Sources