SAN DIEGO _ The vaccine deployment in December 2020 signaled a turning point in the COVID-19 pandemic. By the end of May 2021, 40% of the U.S. population was fully vaccinated. But as vaccination rates lagged over the summer, new surges of COVID-19 came, including Delta in the summer of 2021, and now the Omicron variant, which comprises the majority of cases in the U.S.

The United States as of Apr. 1 reached 980,731 COVID-19-related deaths and nearly 80.1 million COVID-19 cases, according to Johns Hopkins University. Currently, 65.6% of the population is fully vaccinated, and 44.9% of vaccinated people have received booster doses.

Stacker compiled a list of the counties with highest COVID-19 vaccination rates in California using data from the U.S. Department of Health & Human Services and Covid Act Now. Counties are ranked by the highest vaccination rate as of March 31, 2022. Due to inconsistencies in reporting, some counties do not have vaccination data available. Keep reading to see whether your county ranks among the highest COVID-19 vaccination rates in your state.

#50. Siskiyou County

  • Population that is fully vaccinated: 48.6% (21,151 fully vaccinated)
    — 31.6% lower vaccination rate than California
  • Cumulative deaths per 100k: 184 (80 total deaths)
    — 17.5% less deaths per 100k residents than California
  • Cumulative cases per 100k: 16,509 (7,188 total cases)
    — 28.2% less cases per 100k residents than California

#49. Yuba County

  • Population that is fully vaccinated: 48.7% (38,299 fully vaccinated)
    — 31.5% lower vaccination rate than California
  • Cumulative deaths per 100k: 149 (117 total deaths)
    — 33.2% less deaths per 100k residents than California
  • Cumulative cases per 100k: 21,634 (17,019 total cases)
    — 5.9% less cases per 100k residents than California

#48. Merced County

  • Population that is fully vaccinated: 51.2% (142,069 fully vaccinated)
    — 28.0% lower vaccination rate than California
  • Cumulative deaths per 100k: 290 (806 total deaths)
    — 30.0% more deaths per 100k residents than California
  • Cumulative cases per 100k: 25,432 (70,620 total cases)
    — 10.6% more cases per 100k residents than California

#47. Tuolumne County

  • Population that is fully vaccinated: 52.0% (28,317 fully vaccinated)
    — 26.9% lower vaccination rate than California
  • Cumulative deaths per 100k: 330 (180 total deaths)
    — 48.0% more deaths per 100k residents than California
  • Cumulative cases per 100k: 24,226 (13,198 total cases)
    — 5.4% more cases per 100k residents than California

#46. Sierra County

  • Population that is fully vaccinated: 52.1% (1,565 fully vaccinated)
    — 26.7% lower vaccination rate than California
  • Cumulative deaths per 100k: 133 (4 total deaths)
    — 40.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 10,483 (315 total cases)
    — 54.4% less cases per 100k residents than California


#45. Amador County

  • Population that is fully vaccinated: 52.1% (20,727 fully vaccinated)
    — 26.7% lower vaccination rate than California
  • Cumulative deaths per 100k: 216 (86 total deaths)
    — 3.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 22,960 (9,127 total cases)
    — 0.1% less cases per 100k residents than California


#44. Butte County

  • Population that is fully vaccinated: 52.8% (115,783 fully vaccinated)
    — 25.7% lower vaccination rate than California
  • Cumulative deaths per 100k: 181 (396 total deaths)
    — 18.8% less deaths per 100k residents than California
  • Cumulative cases per 100k: 18,067 (39,600 total cases)
    — 21.4% less cases per 100k residents than California

#43. Calaveras County

  • Population that is fully vaccinated: 52.9% (24,299 fully vaccinated)
    — 25.6% lower vaccination rate than California
  • Cumulative deaths per 100k: 259 (119 total deaths)
    — 16.1% more deaths per 100k residents than California
  • Cumulative cases per 100k: 16,571 (7,607 total cases)
    — 27.9% less cases per 100k residents than California

#42. Kern County

  • Population that is fully vaccinated: 53.1% (477,745 fully vaccinated)
    — 25.3% lower vaccination rate than California
  • Cumulative deaths per 100k: 247 (2,220 total deaths)
    — 10.8% more deaths per 100k residents than California
  • Cumulative cases per 100k: 26,396 (237,613 total cases)
    — 14.8% more cases per 100k residents than California


#41. Madera County

  • Population that is fully vaccinated: 53.9% (84,827 fully vaccinated)
    — 24.2% lower vaccination rate than California
  • Cumulative deaths per 100k: 225 (354 total deaths)
    — 0.9% more deaths per 100k residents than California
  • Cumulative cases per 100k: 27,563 (43,364 total cases)
    — 19.9% more cases per 100k residents than California

#40. Tulare County

  • Population that is fully vaccinated: 53.9% (251,249 fully vaccinated)
    — 24.2% lower vaccination rate than California
  • Cumulative deaths per 100k: 302 (1,406 total deaths)
    — 35.4% more deaths per 100k residents than California
  • Cumulative cases per 100k: 28,511 (132,919 total cases)
    — 24.0% more cases per 100k residents than California

#39. Plumas County

  • Population that is fully vaccinated: 54.5% (10,255 fully vaccinated)
    — 23.3% lower vaccination rate than California
  • Cumulative deaths per 100k: 69 (13 total deaths)
    — 69.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 16,579 (3,118 total cases)
    — 27.9% less cases per 100k residents than California

#38. Lake County

  • Population that is fully vaccinated: 54.5% (35,100 fully vaccinated)
    — 23.3% lower vaccination rate than California
  • Cumulative deaths per 100k: 211 (136 total deaths)
    — 5.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,968 (11,569 total cases)
    — 21.9% less cases per 100k residents than California

#37. Glenn County

  • Population that is fully vaccinated: 54.8% (15,563 fully vaccinated)
    — 22.9% lower vaccination rate than California
  • Cumulative deaths per 100k: 166 (47 total deaths)
    — 25.6% less deaths per 100k residents than California
  • Cumulative cases per 100k: 23,094 (6,557 total cases)
    — 0.4% more cases per 100k residents than California

#36. San Bernardino County

  • Population that is fully vaccinated: 56.3% (1,227,590 fully vaccinated)
    — 20.8% lower vaccination rate than California
  • Cumulative deaths per 100k: 315 (6,862 total deaths)
    — 41.3% more deaths per 100k residents than California
  • Cumulative cases per 100k: 26,857 (585,497 total cases)
    — 16.8% more cases per 100k residents than California

#35. Stanislaus County

  • Population that is fully vaccinated: 56.5% (311,226 fully vaccinated)
    — 20.5% lower vaccination rate than California
  • Cumulative deaths per 100k: 284 (1,565 total deaths)
    — 27.4% more deaths per 100k residents than California
  • Cumulative cases per 100k: 24,512 (134,976 total cases)
    — 6.6% more cases per 100k residents than California

#34. Riverside County

  • Population that is fully vaccinated: 57.7% (1,425,561 fully vaccinated)
    — 18.8% lower vaccination rate than California
  • Cumulative deaths per 100k: 259 (6,403 total deaths)
    — 16.1% more deaths per 100k residents than California
  • Cumulative cases per 100k: 25,034 (618,465 total cases)
    — 8.9% more cases per 100k residents than California

#33. Sutter County

  • Population that is fully vaccinated: 60.0% (58,203 fully vaccinated)
    — 15.6% lower vaccination rate than California
  • Cumulative deaths per 100k: 228 (221 total deaths)
    — 2.2% more deaths per 100k residents than California
  • Cumulative cases per 100k: 23,341 (22,634 total cases)
    — 1.5% more cases per 100k residents than California

#32. Colusa County

  • Population that is fully vaccinated: 60.1% (12,941 fully vaccinated)
    — 15.5% lower vaccination rate than California
  • Cumulative deaths per 100k: 97 (21 total deaths)
    — 56.5% less deaths per 100k residents than California
  • Cumulative cases per 100k: 20,996 (4,524 total cases)
    — 8.7% less cases per 100k residents than California

#31. El Dorado County

  • Population that is fully vaccinated: 60.5% (116,719 fully vaccinated)
    — 14.9% lower vaccination rate than California
  • Cumulative deaths per 100k: 104 (200 total deaths)
    — 53.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 15,512 (29,913 total cases)
    — 32.5% less cases per 100k residents than California

#30. Fresno County

  • Population that is fully vaccinated: 60.6% (605,445 fully vaccinated)
    — 14.8% lower vaccination rate than California
  • Cumulative deaths per 100k: 272 (2,718 total deaths)
    — 22.0% more deaths per 100k residents than California
  • Cumulative cases per 100k: 25,274 (252,510 total cases)
    — 9.9% more cases per 100k residents than California

#29. San Joaquin County

  • Population that is fully vaccinated: 60.9% (464,108 fully vaccinated)
    — 14.3% lower vaccination rate than California
  • Cumulative deaths per 100k: 288 (2,198 total deaths)
    — 29.1% more deaths per 100k residents than California
  • Cumulative cases per 100k: 23,016 (175,414 total cases)
    — 0.1% more cases per 100k residents than California

#28. Inyo County

  • Population that is fully vaccinated: 61.7% (11,124 fully vaccinated)
    — 13.2% lower vaccination rate than California
  • Cumulative deaths per 100k: 310 (56 total deaths)
    — 39.0% more deaths per 100k residents than California
  • Cumulative cases per 100k: 25,195 (4,545 total cases)
    — 9.6% more cases per 100k residents than California

#27. Mono County

  • Population that is fully vaccinated: 61.9% (8,947 fully vaccinated)
    — 12.9% lower vaccination rate than California
  • Cumulative deaths per 100k: 35 (5 total deaths)
    — 84.3% less deaths per 100k residents than California
  • Cumulative cases per 100k: 21,372 (3,087 total cases)
    — 7.0% less cases per 100k residents than California

#26. Nevada County

  • Population that is fully vaccinated: 62.6% (62,426 fully vaccinated)
    — 12.0% lower vaccination rate than California
  • Cumulative deaths per 100k: 123 (123 total deaths)
    — 44.8% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,218 (17,176 total cases)
    — 25.1% less cases per 100k residents than California

#25. Alpine County

  • Population that is fully vaccinated: 63.3% (715 fully vaccinated)
    — 11.0% lower vaccination rate than California
  • Cumulative deaths per 100k: 0 (0 total deaths)
    — 100.0% less deaths per 100k residents than California
  • Cumulative cases per 100k: 11,072 (125 total cases)
    — 51.8% less cases per 100k residents than California

#24. San Luis Obispo County

  • Population that is fully vaccinated: 63.5% (179,789 fully vaccinated)
    — 10.7% lower vaccination rate than California
  • Cumulative deaths per 100k: 167 (472 total deaths)
    — 25.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 19,859 (56,222 total cases)
    — 13.6% less cases per 100k residents than California

#23. Humboldt County

  • Population that is fully vaccinated: 65.5% (88,839 fully vaccinated)
    — 7.9% lower vaccination rate than California
  • Cumulative deaths per 100k: 103 (140 total deaths)
    — 53.8% less deaths per 100k residents than California
  • Cumulative cases per 100k: 14,664 (19,878 total cases)
    — 36.2% less cases per 100k residents than California

#22. Solano County

  • Population that is fully vaccinated: 66.4% (297,115 fully vaccinated)
    — 6.6% lower vaccination rate than California
  • Cumulative deaths per 100k: 99 (441 total deaths)
    — 55.6% less deaths per 100k residents than California
  • Cumulative cases per 100k: 19,491 (87,252 total cases)
    — 15.2% less cases per 100k residents than California


#21. Placer County

  • Population that is fully vaccinated: 66.5% (264,929 fully vaccinated)
    — 6.5% lower vaccination rate than California
  • Cumulative deaths per 100k: 154 (614 total deaths)
    — 30.9% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,582 (70,034 total cases)
    — 23.5% less cases per 100k residents than California

#20. Sacramento County

  • Population that is fully vaccinated: 67.0% (1,039,734 fully vaccinated)
    — 5.8% lower vaccination rate than California
  • Cumulative deaths per 100k: 190 (2,946 total deaths)
    — 14.8% less deaths per 100k residents than California
  • Cumulative cases per 100k: 19,515 (302,878 total cases)
    — 15.1% less cases per 100k residents than California

#19. Mendocino County

  • Population that is fully vaccinated: 68.2% (59,149 fully vaccinated)
    — 4.1% lower vaccination rate than California
  • Cumulative deaths per 100k: 137 (119 total deaths)
    — 38.6% less deaths per 100k residents than California
  • Cumulative cases per 100k: 18,492 (16,042 total cases)
    — 19.6% less cases per 100k residents than California

#18. Santa Barbara County

  • Population that is fully vaccinated: 68.5% (306,016 fully vaccinated)
    — 3.7% lower vaccination rate than California
  • Cumulative deaths per 100k: 151 (676 total deaths)
    — 32.3% less deaths per 100k residents than California
  • Cumulative cases per 100k: 20,222 (90,291 total cases)
    — 12.0% less cases per 100k residents than California

#17. Yolo County

  • Population that is fully vaccinated: 69.8% (153,949 fully vaccinated)
    — 1.8% lower vaccination rate than California
  • Cumulative deaths per 100k: 142 (313 total deaths)
    — 36.3% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,902 (39,473 total cases)
    — 22.1% less cases per 100k residents than California

#16. Ventura County

  • Population that is fully vaccinated: 71.5% (605,047 fully vaccinated)
    — 0.6% higher vaccination rate than California
  • Cumulative deaths per 100k: 173 (1,460 total deaths)
    — 22.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 21,538 (182,213 total cases)
    — 6.3% less cases per 100k residents than California

#15. San Benito County

  • Population that is fully vaccinated: 71.6% (44,997 fully vaccinated)
    — 0.7% higher vaccination rate than California
  • Cumulative deaths per 100k: 154 (97 total deaths)
    — 30.9% less deaths per 100k residents than California
  • Cumulative cases per 100k: 21,348 (13,408 total cases)
    — 7.2% less cases per 100k residents than California

#14. Monterey County

  • Population that is fully vaccinated: 72.0% (312,502 fully vaccinated)
    — 1.3% higher vaccination rate than California
  • Cumulative deaths per 100k: 167 (725 total deaths)
    — 25.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 21,278 (92,360 total cases)
    — 7.5% less cases per 100k residents than California

#13. Orange County

  • Population that is fully vaccinated: 72.0% (2,285,930 fully vaccinated)
    — 1.3% higher vaccination rate than California
  • Cumulative deaths per 100k: 216 (6,871 total deaths)
    — 3.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 18,486 (587,066 total cases)
    — 19.6% less cases per 100k residents than California

#12. Los Angeles County

  • Population that is fully vaccinated: 72.7% (7,294,443 fully vaccinated)
    — 2.3% higher vaccination rate than California
  • Cumulative deaths per 100k: 313 (31,378 total deaths)
    — 40.4% more deaths per 100k residents than California
  • Cumulative cases per 100k: 28,142 (2,825,185 total cases)
    — 22.4% more cases per 100k residents than California

#11. Santa Cruz County

  • Population that is fully vaccinated: 74.7% (204,072 fully vaccinated)
    — 5.1% higher vaccination rate than California
  • Cumulative deaths per 100k: 95 (259 total deaths)
    — 57.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 18,053 (49,322 total cases)
    — 21.5% less cases per 100k residents than California

#10. San Diego County

  • Population that is fully vaccinated: 76.9% (2,566,482 fully vaccinated)
    — 8.2% higher vaccination rate than California
  • Cumulative deaths per 100k: 155 (5,159 total deaths)
    — 30.5% less deaths per 100k residents than California
  • Cumulative cases per 100k: 24,032 (802,284 total cases)
    — 4.5% more cases per 100k residents than California

#9. Sonoma County

  • Population that is fully vaccinated: 77.8% (384,701 fully vaccinated)
    — 9.4% higher vaccination rate than California
  • Cumulative deaths per 100k: 98 (485 total deaths)
    — 56.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,312 (85,578 total cases)
    — 24.7% less cases per 100k residents than California

#8. Napa County

  • Population that is fully vaccinated: 78.5% (108,077 fully vaccinated)
    — 10.4% higher vaccination rate than California
  • Cumulative deaths per 100k: 102 (141 total deaths)
    — 54.3% less deaths per 100k residents than California
  • Cumulative cases per 100k: 19,380 (26,695 total cases)
    — 15.7% less cases per 100k residents than California

#7. Alameda County

  • Population that is fully vaccinated: 81.1% (1,355,112 fully vaccinated)
    — 14.1% higher vaccination rate than California
  • Cumulative deaths per 100k: 108 (1,810 total deaths)
    — 51.6% less deaths per 100k residents than California
  • Cumulative cases per 100k: 16,096 (269,023 total cases)
    — 30.0% less cases per 100k residents than California

#6. Contra Costa County

  • Population that is fully vaccinated: 81.7% (942,778 fully vaccinated)
    — 14.9% higher vaccination rate than California
  • Cumulative deaths per 100k: 112 (1,290 total deaths)
    — 49.8% less deaths per 100k residents than California
  • Cumulative cases per 100k: 17,471 (201,535 total cases)
    — 24.0% less cases per 100k residents than California

#5. San Francisco County

  • Population that is fully vaccinated: 83.0% (731,937 fully vaccinated)
    — 16.7% higher vaccination rate than California
  • Cumulative deaths per 100k: 95 (840 total deaths)
    — 57.4% less deaths per 100k residents than California
  • Cumulative cases per 100k: 15,103 (133,137 total cases)
    — 34.3% less cases per 100k residents than California

#4. San Mateo County

  • Population that is fully vaccinated: 83.9% (643,225 fully vaccinated)
    — 18.0% higher vaccination rate than California
  • Cumulative deaths per 100k: 89 (686 total deaths)
    — 60.1% less deaths per 100k residents than California
  • Cumulative cases per 100k: 16,630 (127,481 total cases)
    — 27.7% less cases per 100k residents than California

#3. Santa Clara County

  • Population that is fully vaccinated: 85.0% (1,639,379 fully vaccinated)
    — 19.5% higher vaccination rate than California
  • Cumulative deaths per 100k: 117 (2,259 total deaths)
    — 47.5% less deaths per 100k residents than California
  • Cumulative cases per 100k: 16,827 (324,405 total cases)
    — 26.8% less cases per 100k residents than California

#2. Marin County

  • Population that is fully vaccinated: 86.8% (224,710 fully vaccinated)
    — 22.1% higher vaccination rate than California
  • Cumulative deaths per 100k: 111 (287 total deaths)
    — 50.2% less deaths per 100k residents than California
  • Cumulative cases per 100k: 13,771 (35,643 total cases)
    — 40.1% less cases per 100k residents than California

#1. Imperial County

  • Population that is fully vaccinated: 93.1% (168,781 fully vaccinated)
    — 30.9% higher vaccination rate than California
  • Cumulative deaths per 100k: 502 (909 total deaths)
    — 125.1% more deaths per 100k residents than California
  • Cumulative cases per 100k: 36,629 (66,377 total cases)
    — 59.3% more cases per 100k residents than California