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Here’s a list of California counties with the highest COVID-19 infection rates

In this file photo, a sign explaining the LA County Mandate is posted for customers inside the Intelligentsia Coffee on Sunset Blvd., in Los Angeles on Nov. 29, 2021. (AP Photo/Damian Dovarganes)

As has been true throughout America’s COVID-19 history, every state — and every county therein— has its own COVID-19 story, driven by local policies and behaviors.

As of Nov. 30, the United States reached 778,667 COVID-19-related deaths and 48.4 million COVID-19 cases, according to Johns Hopkins University.

As vaccination rates lagged over the summer, COVID-19 cases surged, and as of late July, more than 80% were caused by the delta variant.

This has resulted in growing rates of community transmission and — especially in areas with lower vaccination rates — increasing rates of hospitalization and death.

Stacker compiled a list of the counties with highest COVID-19 infection rates in California using data from the U.S. Department of Health & Human Services. Counties are ranked by the highest infection rate per 100,000 residents within the past week as of Nov. 29, 2021.

Keep reading to see whether your county ranks among the highest COVID-19 infection rates in your state.

(Naotake Murayama/Wikicommons)

#50. Monterey County, CA

(Canva)

#49. Ventura County, CA

(Kglavin/Wikimedia Commons)

#48. Marin County, CA

(Jennifer Williams/Wikimedia Commons)

#47. Alameda County, CA

(Kenneth Green/Wikimedia Commons)

#46. Plumas County, CA

(U.S. Army Corps of Engineers Sacramento District/Wikimedia Commons)

#45. Yuba County, CA

(Trance Addict/Wikimedia Commons)

#44. Glenn County, CA

(Basar/Wikicommons)

#43. San Luis Obispo County, CA

(MARELBU/Wikimedia Commons)

#42. Contra Costa County, CA

(Epolk/Wikimedia Commons)

#41. Yolo County, CA

(Fred Hsu/Wikicommons)

#40. Sonoma County, CA

(Canva)

#39. Solano County, CA

(LPS.1/Wikicommons)

#38. San Joaquin County, CA

(Mark Miller/Wikimedia Commons)

#37. Merced County, CA

(DimiTalen/Wikimedia Commons)

#36. El Dorado County, CA

(Canva)

#35. Calaveras County, CA

(Public Domain)

#34. Madera County, CA

(Cory Maylett/Wikimedia Commons)

#33. Humboldt County, CA

(Uladzik Kryhin/Shutterstock)

#32. Santa Clara County, CA

(Canva)

#31. Sacramento County, CA

(Ray Bouknight/Wikicommons)

#30. Sutter County, CA

(Doug Olson/Wikimedia Commons)

#29. Placer County, CA

(Pixabay)

#28. Santa Barbara County, CA

(David Jordan/Wikicommons)

#27. Fresno County, CA

(Canva)

#26. San Bernardino County, CA

(Canva)

#25. Butte County, CA

(Bobak Ha’Eri/Wikimedia Commons)

#24. Amador County, CA

(Canva)

#23. Tulare County, CA

(Daniel Orth/Flickr)

#22. Riverside County, CA

(Michael Patrick/Wikimedia Commons)

#21. San Benito County, CA

(Doug Kerr/Wikicommons)

#20. Shasta County, CA

(Aaronbrick/Wikicommons)

#19. Santa Cruz County, CA

(Bobak Ha’Eri/Wikimedia Commons)

#18. Tuolumne County, CA

(Frank Schulenburg/Wikimedia Commons)

#17. Nevada County, CA

(Chuck Abbe/Wikimedia Commons)

#16. Inyo County, CA

(CleanWater17/Wikimedia Commons)

#15. Colusa County, CA

(Binksternet/Wikimedia Commons)

#14. Mendocino County, CA

(Canva)

#13. Sierra County, CA

(Hollywood/Wikimedia Commons)

#12. Orange County, CA

(Armona/Wikicommons)

#11. Kings County, CA

(Almonroth/Wikimedia Commons)

#10. Trinity County, CA

(Wikicommons)

#9. Imperial County, CA

(BDS2006/Wikimedia)

#8. Los Angeles County, CA

(SD Dirk/Flickr)

#7. San Diego County, CA

(clr_flickr/Wikimedia Commons)

#6. Mono County, CA

(Susan Popielaski/Wikimedia Commons)

#5. Alpine County, CA

(EPoelzl/Wikimedia Commons)

#4. Mariposa County, CA

(Finetooth/Wikimedia Commons)

#3. Lassen County, CA

(nickchapman/Wikicommons)

#2. Kern County, CA

(Public Domain)

#1. Stanislaus County, CA