RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Medicare coverage, California counties

California counties ranked by the share of people covered by Medicare, alone or in combination with other coverage (2024 ACS). A close proxy for retirement geography. This list covers the 58 counties in California that qualify, ranked against each other statewide.

CaliforniaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR2020 2024

RANKPLACESTATEPOPMEDICAREVS 2020

01Sierra County, CACA3,09837.9%+6.6 pts

02Plumas County, CACA18,58333.0%+3.8 pts

03Modoc County, CACA8,42632.6%+3.0 pts

04Trinity County, CACA15,72031.6%−0.8 pts

05Tuolumne County, CACA53,16031.6%+1.0 pts

06Mariposa County, CACA16,91831.3%+0.2 pts

07Amador County, CACA41,87630.9%−1.5 pts

08Calaveras County, CACA46,60530.5%+0.2 pts

09Nevada County, CACA101,91130.4%+1.1 pts

10Siskiyou County, CACA42,01330.2%+1.4 pts

11Lake County, CACA67,77227.5%−0.7 pts

12Inyo County, CACA18,15826.9%+1.4 pts

13Del Norte County, CACA26,41026.0%+3.6 pts

14Mendocino County, CACA88,12225.8%+2.2 pts

15El Dorado County, CACA192,32324.4%+1.5 pts

16Shasta County, CACA181,64824.3%+0.4 pts

17Marin County, CACA253,69423.5%+1.0 pts

18Tehama County, CACA64,66523.0%−0.4 pts

19Lassen County, CACA28,11722.9%−0.3 pts

20San Luis Obispo County, CACA282,36722.9%+1.8 pts

21Humboldt County, CACA131,64722.6%+2.0 pts

22Sonoma County, CACA486,44422.3%+1.8 pts

23Napa County, CACA132,94921.4%+1.7 pts

24Placer County, CACA442,08120.9%+0.7 pts

25Butte County, CACA209,21120.3%−0.3 pts

26Alpine County, CACA1,04320.0%−9.7 pts

27Santa Cruz County, CACA258,85219.3%+1.7 pts

28Glenn County, CACA28,14118.9%−0.2 pts

29Solano County, CACA455,37618.7%+1.6 pts

30Mono County, CACA12,50518.0%+2.0 pts

31Sutter County, CACA98,78718.0%+1.2 pts

32Ventura County, CACA830,85118.0%+1.5 pts

33San Francisco County, CACA826,07917.7%+1.6 pts

34Contra Costa County, CACA1,170,07017.4%+0.9 pts

35San Mateo County, CACA743,56817.3%+1.4 pts

36Santa Barbara County, CACA442,06517.2%+1.1 pts

37Madera County, CACA167,92716.8%+0.9 pts

38Colusa County, CACA21,83616.6%+1.2 pts

39Yuba County, CACA88,69116.6%+0.5 pts

40Orange County, CACA3,149,50716.4%+1.3 pts

41San Diego County, CACA3,282,24816.4%+1.1 pts

42Riverside County, CACA2,544,91616.3%+0.7 pts

43Sacramento County, CACA1,618,46016.3%+0.6 pts

44Monterey County, CACA433,72915.7%+1.3 pts

45Alameda County, CACA1,636,63015.5%+1.3 pts

46Imperial County, CACA181,41115.5%+0.0 pts

47Los Angeles County, CACA9,694,93415.5%+1.3 pts

48Stanislaus County, CACA557,71915.1%+0.3 pts

49San Benito County, CACA70,08214.6%+0.9 pts

50Santa Clara County, CACA1,914,39114.5%+0.9 pts

51San Joaquin County, CACA823,81514.4%+0.5 pts

52Fresno County, CACA1,035,45614.0%+0.4 pts

53Yolo County, CACA224,41013.9%+1.1 pts

54San Bernardino County, CACA2,224,09113.8%+0.8 pts

55Kern County, CACA927,06813.5%+0.7 pts

56Merced County, CACA297,26013.4%+0.6 pts

57Tulare County, CACA485,14613.3%−3.6 pts

58Kings County, CACA154,32712.9%−3.4 pts

SHOWING 1–58 OF 58

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES