Idaho counties

Medicare Advantage and marketplace plans are set by area, so start with your county. 44 listed.

CountyPopulation (2023 est.)Rank in Idaho
Ada County524,6731
Adams County4,90339
Bannock County90,4006
Bear Lake County6,76636
Benewah County10,36930
Bingham County50,3959
Blaine County25,04117
Boise County8,51732
Bonner County52,5478
Bonneville County131,3664
Boundary County13,55725
Butte County2,75842
Camas County1,23243
Canyon County257,6742
Caribou County7,21935
Cassia County25,69615
Clark County80144
Clearwater County9,21431
Custer County4,52340
Elmore County29,72413
Franklin County15,49422
Fremont County14,19623
Gem County21,07119
Gooding County16,06121
Idaho County17,89020
Jefferson County34,19812
Jerome County25,47916
Kootenai County185,0103
Latah County41,30111
Lemhi County8,44133
Lewis County3,73941
Lincoln County5,45037
Madison County54,5477
Minidoka County22,48018
Nez Perce County42,98710
Oneida County4,95338
Owyhee County12,72226
Payette County27,27914
Power County8,25334
Shoshone County14,02624
Teton County12,54928
Twin Falls County95,1565
Valley County12,64427
Washington County11,42529

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

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Call Lander LLC to go over your options. There is no cost to call or to speak with an agent, and you are never required to enroll in anything.

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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 Idaho 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 Idaho plan is right for you? Call and we'll help you find it.

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Short-term · TriTerm

Need coverage in between?

Short-term and TriTerm plans can start quickly and help with big unexpected medical bills. They are not ACA plans: they can ask health questions, may not cover pre-existing conditions, and what is offered varies by state.

TriTermlink coming soon

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