Colorado Medical CoverageThe Centennial StateCall 855-367-1095

Colorado counties

Medicare Advantage and marketplace plans are set by area, so start with your county. 64 listed.

CountyPopulation (2023 est.)Rank in ColoradoMedicare plans leaving (2027)
Adams County533,365520
Alamosa County16,6553014
Arapahoe County656,061320
Archuleta County14,1893416
Baca County3,344564
Bent County5,681488
Boulder County326,831922
Broomfield County76,8601221
Chaffee County20,6172611
Cheyenne County1,727594
Clear Creek County9,1473934
Conejos County7,5214117
Costilla County3,628558
Crowley County5,6364919
Custer County5,5345019
Delta County31,7461821
Denver County716,577221
Dolores County2,513578
Douglas County383,906627
Eagle County54,381156
El Paso County744,215121
Elbert County28,8062129
Fremont County50,3181618
Garfield County62,707134
Gilpin County5,9264726
Grand County15,9353218
Gunnison County17,321298
Hinsdale County765648
Huerfano County7,0554319
Jackson County1,3096119
Jefferson County576,366421
Kiowa County1,384604
Kit Carson County6,994444
La Plata County56,4071414
Lake County7,3654210
Larimer County370,771723
Las Animas County14,3483316
Lincoln County5,4805117
Logan County20,619259
Mesa County159,6811118
Mineral County944628
Moffat County13,327354
Montezuma County26,531229
Montrose County44,1561711
Morgan County29,5242021
Otero County18,136277
Ouray County5,176528
Park County18,1172824
Phillips County4,476546
Pitkin County16,640314
Prowers County11,751364
Pueblo County169,4221022
Rio Blanco County6,569468
Rio Grande County11,1883711
Routt County25,064234
Saguache County6,6884514
San Juan County802638
San Miguel County7,868408
Sedgwick County2,299584
Summit County30,465199
Teller County24,6172426
Washington County4,8555320
Weld County359,442825
Yuma County9,862386

Population: U.S. Census Bureau Population Estimates, 2023.

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Reviewed by Richard Lander, licensed insurance agent (NPN 21255551), Lander LLC. Last updated October 3, 2026. This page is educational and is not a quote, an offer of coverage, or legal or tax advice.

Do it yourself

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Medicare

Medicare Open Enrollment starts October 15th

Take a look at Colorado plans, or go ahead and enroll yourself. Call if you need any help with your application.

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Under 65 · ACA

ACA Open Enrollment opens November 1st

Open enrollment starts November 1st. Not sure which Colorado plan is right for you? Call and we'll help you find it.

Call for assistance finding the right plan855-367-1095

Questions along the way? Call 855-367-1095 for assistance.