Enrollment
Use current CMS enrollment data to understand Marketplace participation without treating plan selections as active enrollment or a guarantee of coverage.
Montana Marketplace intelligence
Montana ACA Marketplace coverage, explained with current sources.
Montana uses HealthCare.gov for Marketplace enrollment. CMS reports 357,144 cumulative 2026 Open Enrollment plan selections across Montana counties in the 2026 County-Level Public Use File.
Source: Centers for Medicare & Medicaid Services · Verified September 17, 2026
2026 Montana Marketplace73,255 plan selectionsGallatin County leads Montana with 11,092 selections. CMS county-level OEP data; not a personal quote.
What the Montana data can tell you
Financial assistance
Eligibility for premium tax credits depends on current federal rules and household circumstances. CoveragePath verifies rule changes before publishing numeric guidance.
County intelligence
CoveragePath now publishes verified 2026 CMS Marketplace benchmarks for 56 Montana counties, including enrollment, premium and APTC measures.
2026 ACA Marketplace data by Montana county
Choose your county to review its verified CMS Marketplace enrollment, premium and financial-assistance benchmarks. County figures are historical measures, not a quote or guarantee of eligibility or plan availability.
Beaverhead County
828 2026 Marketplace plan selections reported by CMS.
Big Horn County
710 2026 Marketplace plan selections reported by CMS.
Blaine County
414 2026 Marketplace plan selections reported by CMS.
Broadwater County
481 2026 Marketplace plan selections reported by CMS.
Carbon County
1,010 2026 Marketplace plan selections reported by CMS.
Carter County
149 2026 Marketplace plan selections reported by CMS.
Cascade County
3,729 2026 Marketplace plan selections reported by CMS.
Chouteau County
415 2026 Marketplace plan selections reported by CMS.
Custer County
663 2026 Marketplace plan selections reported by CMS.
Daniels County
133 2026 Marketplace plan selections reported by CMS.
Dawson County
581 2026 Marketplace plan selections reported by CMS.
Deer Lodge County
450 2026 Marketplace plan selections reported by CMS.
Fallon County
195 2026 Marketplace plan selections reported by CMS.
Fergus County
765 2026 Marketplace plan selections reported by CMS.
Flathead County
9,395 2026 Marketplace plan selections reported by CMS.
Gallatin County
11,092 2026 Marketplace plan selections reported by CMS.
Garfield County
169 2026 Marketplace plan selections reported by CMS.
Glacier County
698 2026 Marketplace plan selections reported by CMS.
Golden Valley County
61 2026 Marketplace plan selections reported by CMS.
Granite County
381 2026 Marketplace plan selections reported by CMS.
Hill County
1,227 2026 Marketplace plan selections reported by CMS.
Jefferson County
759 2026 Marketplace plan selections reported by CMS.
Judith Basin County
221 2026 Marketplace plan selections reported by CMS.
Lake County
1,605 2026 Marketplace plan selections reported by CMS.
Lewis and Clark County
3,541 2026 Marketplace plan selections reported by CMS.
Liberty County
139 2026 Marketplace plan selections reported by CMS.
Lincoln County
1,040 2026 Marketplace plan selections reported by CMS.
Madison County
955 2026 Marketplace plan selections reported by CMS.
McCone County
174 2026 Marketplace plan selections reported by CMS.
Meagher County
157 2026 Marketplace plan selections reported by CMS.
Mineral County
264 2026 Marketplace plan selections reported by CMS.
Missoula County
8,221 2026 Marketplace plan selections reported by CMS.
Musselshell County
299 2026 Marketplace plan selections reported by CMS.
Park County
1,767 2026 Marketplace plan selections reported by CMS.
Petroleum County
67 2026 Marketplace plan selections reported by CMS.
Phillips County
308 2026 Marketplace plan selections reported by CMS.
Pondera County
364 2026 Marketplace plan selections reported by CMS.
Powder River County
222 2026 Marketplace plan selections reported by CMS.
Powell County
327 2026 Marketplace plan selections reported by CMS.
Prairie County
89 2026 Marketplace plan selections reported by CMS.
Ravalli County
3,542 2026 Marketplace plan selections reported by CMS.
Richland County
676 2026 Marketplace plan selections reported by CMS.
Roosevelt County
589 2026 Marketplace plan selections reported by CMS.
Rosebud County
526 2026 Marketplace plan selections reported by CMS.
Sanders County
806 2026 Marketplace plan selections reported by CMS.
Sheridan County
355 2026 Marketplace plan selections reported by CMS.
Silver Bow County
1,860 2026 Marketplace plan selections reported by CMS.
Stillwater County
588 2026 Marketplace plan selections reported by CMS.
Sweet Grass County
448 2026 Marketplace plan selections reported by CMS.
Teton County
503 2026 Marketplace plan selections reported by CMS.
Toole County
260 2026 Marketplace plan selections reported by CMS.
Treasure County
60 2026 Marketplace plan selections reported by CMS.
Valley County
516 2026 Marketplace plan selections reported by CMS.
Wheatland County
157 2026 Marketplace plan selections reported by CMS.
Wibaux County
83 2026 Marketplace plan selections reported by CMS.
Yellowstone County
8,221 2026 Marketplace plan selections reported by CMS.
Continue your coverage path
Start with eligibility factors, then review savings and Special Enrollment guidance. Final eligibility and plan availability must be verified through the Marketplace.