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Montana Medicare plans by county — 2026
56 counties in Montana are served by 1,212 Medicare plans from 8 carriers in 2026. 127 Medicare Advantage plans have a $0 premium. 224,673 residents are 65 or older.
| County | Plans | Carriers | $0 premium | Avg. stars | Residents 65+ | Plans vs. prior year |
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| Beaverhead County | 20 | 7 | 1 | 3.7 | 2,314 | |
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| Big Horn County | 26 | 7 | 2 | 3.6 | 1,814 | |
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| Blaine County | 11 | 6 | 0 | | 1,163 | |
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| Broadwater County | 22 | 7 | 1 | 3.7 | 1,782 | |
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| Carbon County | 22 | 7 | 1 | 3.7 | 3,118 | |
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| Carter County | 11 | 6 | 0 | | 407 | |
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| Cascade County | 32 | 7 | 7 | 3.8 | 16,614 | |
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| Chouteau County | 28 | 7 | 4 | 3.6 | 1,381 | |
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| Custer County | 17 | 7 | 3 | 3.5 | 2,482 | |
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| Daniels County | 13 | 6 | 0 | 2.5 | 473 | |
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| Dawson County | 11 | 6 | 0 | | 1,868 | |
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| Deer Lodge County | 23 | 7 | 1 | 3.7 | 2,528 | |
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| Fallon County | 13 | 6 | 0 | 2.5 | 614 | |
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| Fergus County | 26 | 7 | 4 | 3.6 | 2,931 | |
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| Flathead County | 36 | 7 | 8 | 3.7 | 23,352 | |
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| Gallatin County | 26 | 7 | 4 | 3.9 | 16,865 | |
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| Garfield County | 13 | 6 | 0 | 2.5 | 289 | |
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| Glacier County | 30 | 7 | 5 | 3.5 | 1,802 | |
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| Golden Valley County | 30 | 7 | 5 | 3.5 | 259 | |
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| Granite County | 22 | 7 | 1 | 3.7 | 1,082 | |
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| Hill County | 17 | 7 | 3 | 3.5 | 2,632 | |
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| Jefferson County | 23 | 7 | 1 | 3.7 | 2,961 | |
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| Judith Basin County | 27 | 7 | 4 | 3.6 | 539 | |
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| Lake County | 27 | 7 | 4 | 3.6 | 7,894 | |
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| Lewis and Clark County | 27 | 7 | 4 | 3.8 | 14,843 | |
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| Liberty County | 26 | 7 | 4 | 3.6 | 421 | |
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| Lincoln County | 24 | 7 | 1 | 3.6 | 6,382 | |
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| Madison County | 22 | 7 | 1 | 3.7 | 2,839 | |
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| McCone County | 15 | 6 | 1 | 3.0 | 508 | |
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| Meagher County | 26 | 7 | 4 | 3.6 | 697 | |
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| Mineral County | 26 | 7 | 4 | 3.6 | 1,394 | |
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| Missoula County | 27 | 7 | 4 | 3.8 | 20,683 | |
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| Musselshell County | 25 | 7 | 4 | 3.6 | 1,494 | |
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| Park County | 22 | 7 | 1 | 3.7 | 4,360 | |
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| Petroleum County | 13 | 6 | 0 | 2.5 | 126 | |
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| Phillips County | 13 | 6 | 0 | 2.5 | 1,013 | |
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| Pondera County | 28 | 7 | 4 | 3.6 | 1,319 | |
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| Powder River County | 13 | 6 | 0 | 2.5 | 545 | |
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| Powell County | 23 | 7 | 1 | 3.7 | 1,472 | |
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| Prairie County | 13 | 6 | 0 | 2.5 | 527 | |
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| Ravalli County | 27 | 7 | 2 | 3.5 | 12,622 | |
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| Richland County | 11 | 6 | 0 | | 1,963 | |
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| Roosevelt County | 13 | 6 | 0 | 2.5 | 1,286 | |
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| Rosebud County | 26 | 7 | 4 | 3.6 | 1,433 | |
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| Sanders County | 27 | 7 | 4 | 3.6 | 4,384 | |
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| Sheridan County | 11 | 6 | 0 | | 833 | |
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| Silver Bow County | 24 | 7 | 1 | 3.6 | 6,972 | |
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| Stillwater County | 22 | 7 | 1 | 3.7 | 2,314 | |
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| Sweet Grass County | 24 | 7 | 4 | 3.6 | 959 | |
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| Teton County | 29 | 7 | 2 | 3.6 | 1,466 | |
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| Toole County | 25 | 7 | 4 | 3.6 | 912 | |
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| Treasure County | 19 | 6 | 1 | 3.8 | 167 | |
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| Valley County | 13 | 6 | 0 | 2.5 | 1,843 | |
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| Wheatland County | 24 | 7 | 4 | 3.6 | 596 | |
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| Wibaux County | 11 | 6 | 0 | | 244 | |
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| Yellowstone County | 37 | 8 | 8 | 3.6 | 30,892 | |
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This page summarizes publicly available CMS data. It is not a plan finder and does not recommend plans. To compare and enroll in plans, use Medicare.gov or talk to a licensed agent. Medicare.gov plan finder.