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California Medicare plans by county — 2027
58 counties in California are served by 1,858 Medicare plans from 39 carriers in 2027. 917 Medicare Advantage plans have a $0 premium. 6,158,371 residents are 65 or older.
| County | Plans | Carriers | $0 premium | Avg. stars | Residents 65+ | Plans vs. prior year |
|---|---|---|---|---|---|---|
| Alameda County | 42 | 13 | 19 | 3.5 | 254,161 | −7 |
| Alpine County | 14 | 7 | 2 | 3.4 | 341 | −3 |
| Amador County | 20 | 8 | 6 | 3.6 | 11,423 | −3 |
| Butte County | 15 | 7 | 4 | 3.5 | 38,227 | −1 |
| Calaveras County | 14 | 6 | 3 | 3.4 | 13,517 | −3 |
| Colusa County | 10 | 5 | 0 | 3.3 | 3,410 | −2 |
| Contra Costa County | 20 | 8 | 5 | 3.7 | 199,270 | −3 |
| Del Norte County | 14 | 6 | 3 | 3.5 | 5,552 | −1 |
| El Dorado County | 20 | 9 | 5 | 3.6 | 45,254 | −2 |
| Fresno County | 52 | 13 | 31 | 3.6 | 131,488 | −5 |
| Glenn County | 14 | 6 | 3 | 3.5 | 4,893 | −1 |
| Humboldt County | 14 | 6 | 3 | 3.5 | 26,660 | −1 |
| Imperial County | 27 | 8 | 11 | 3.5 | 24,701 | −6 |
| Inyo County | 16 | 7 | 5 | 3.5 | 4,675 | −2 |
| Kern County | 52 | 14 | 33 | 3.5 | 108,560 | +1 |
| Kings County | 32 | 12 | 17 | 3.6 | 16,584 | −5 |
| Lake County | 10 | 5 | 0 | 3.3 | 16,290 | −3 |
| Lassen County | 12 | 5 | 1 | 3.4 | 5,012 | −2 |
| Los Angeles County | 134 | 22 | 103 | 3.6 | 1,487,700 | +1 |
| Madera County | 51 | 13 | 30 | 3.6 | 23,148 | −6 |
| Marin County | 33 | 10 | 13 | 3.6 | 61,345 | −2 |
| Mariposa County | 20 | 8 | 5 | 3.7 | 5,073 | −1 |
| Mendocino County | 14 | 6 | 3 | 3.5 | 22,154 | −2 |
| Merced County | 28 | 9 | 10 | 3.5 | 34,001 | −1 |
| Modoc County | 14 | 6 | 3 | 3.5 | 2,722 | −1 |
| Mono County | 18 | 7 | 6 | 3.5 | 2,297 | −2 |
| Monterey County | 20 | 9 | 5 | 3.5 | 65,068 | −1 |
| Napa County | 18 | 8 | 6 | 3.6 | 28,455 | −1 |
| Nevada County | 15 | 6 | 3 | 3.5 | 30,033 | −1 |
| Orange County | 121 | 18 | 93 | 3.6 | 514,824 | +5 |
| Placer County | 36 | 9 | 16 | 3.6 | 85,822 | −5 |
| Plumas County | 16 | 6 | 4 | 3.6 | 6,114 | −1 |
| Riverside County | 98 | 20 | 75 | 3.6 | 382,888 | −5 |
| Sacramento County | 42 | 12 | 21 | 3.5 | 243,370 | −8 |
| San Benito County | 15 | 7 | 3 | 3.5 | 9,234 | −1 |
| San Bernardino County | 105 | 19 | 82 | 3.6 | 276,984 | −5 |
| San Diego County | 95 | 18 | 68 | 3.6 | 507,734 | −10 |
| San Francisco County | 56 | 15 | 27 | 3.5 | 146,510 | −7 |
| San Joaquin County | 49 | 12 | 22 | 3.7 | 107,730 | −7 |
| San Luis Obispo County | 27 | 9 | 10 | 3.5 | 62,338 | −3 |
| San Mateo County | 36 | 15 | 16 | 3.6 | 132,242 | −9 |
| Santa Barbara County | 18 | 7 | 3 | 3.5 | 73,710 | −3 |
| Santa Clara County | 46 | 14 | 20 | 3.6 | 282,010 | −12 |
| Santa Cruz County | 19 | 9 | 4 | 3.7 | 50,275 | −1 |
| Shasta County | 15 | 7 | 4 | 3.5 | 39,009 | −1 |
| Sierra County | 12 | 5 | 1 | 3.4 | 963 | −2 |
| Siskiyou County | 14 | 6 | 3 | 3.5 | 12,101 | −1 |
| Solano County | 20 | 8 | 6 | 3.6 | 78,738 | −5 |
| Sonoma County | 23 | 10 | 6 | 3.7 | 104,389 | +2 |
| Stanislaus County | 46 | 12 | 20 | 3.7 | 76,271 | −4 |
| Sutter County | 17 | 8 | 4 | 3.6 | 16,216 | +2 |
| Tehama County | 15 | 7 | 4 | 3.5 | 13,085 | −1 |
| Trinity County | 10 | 5 | 0 | 3.3 | 4,795 | −2 |
| Tulare County | 31 | 12 | 16 | 3.6 | 57,101 | −5 |
| Tuolumne County | 16 | 7 | 5 | 3.5 | 15,339 | −2 |
| Ventura County | 43 | 13 | 24 | 3.6 | 145,793 | −4 |
| Yolo County | 36 | 10 | 17 | 3.6 | 29,712 | −10 |
| Yuba County | 18 | 8 | 5 | 3.6 | 11,060 | −1 |
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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.