RANKING · 2024 ACS · 58 SHOWN OF 58

Worst broadband access, California counties

California counties with the lowest broadband subscription rates, where federal infrastructure investment is being targeted (2024 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 91.8%.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most densely populated

RANKPLACESTATEPOPBROADBAND INTERNET SUBSCRIPTIONVS –

01Sierra County, CACA3,09879.5%–

02Trinity County, CACA15,72081.9%–

03Colusa County, CACA21,83684.6%–

04Inyo County, CACA18,15885.1%–

05Calaveras County, CACA46,60585.5%–

06Plumas County, CACA18,58385.5%–

07Kings County, CACA154,32786.8%–

08Lake County, CACA67,77287.1%–

09Modoc County, CACA8,42687.4%–

10Mariposa County, CACA16,91887.9%–

11Tehama County, CACA64,66588.0%–

12Amador County, CACA41,87688.2%–

13Merced County, CACA297,26088.4%–

14Siskiyou County, CACA42,01388.5%–

15Lassen County, CACA28,11788.7%–

16Tuolumne County, CACA53,16088.8%–

17Fresno County, CACA1,035,45688.9%–

18Glenn County, CACA28,14189.5%–

19Mendocino County, CACA88,12289.6%–

20Tulare County, CACA485,14689.7%–

21Imperial County, CACA181,41190.1%–

22Alpine County, CACA1,04390.6%–

23Sutter County, CACA98,78790.6%–

24Humboldt County, CACA131,64790.9%–

25Madera County, CACA167,92791.0%–

26Shasta County, CACA181,64891.3%–

27Del Norte County, CACA26,41091.4%–

28Kern County, CACA927,06891.6%–

29Butte County, CACA209,21191.8%–

30Yuba County, CACA88,69191.8%–

31Stanislaus County, CACA557,71992.1%–

32Yolo County, CACA224,41092.3%–

33Mono County, CACA12,50592.4%–

34El Dorado County, CACA192,32392.5%–

35San Joaquin County, CACA823,81592.5%–

36Santa Barbara County, CACA442,06592.5%–

37Los Angeles County, CACA9,694,93493.0%–

38Nevada County, CACA101,91193.0%–

39San Francisco County, CACA826,07993.0%–

40San Luis Obispo County, CACA282,36793.1%–

41San Bernardino County, CACA2,224,09193.3%–

42Napa County, CACA132,94993.5%–

43Riverside County, CACA2,544,91693.6%–

44Monterey County, CACA433,72993.8%–

45Solano County, CACA455,37693.8%–

46Sacramento County, CACA1,618,46094.0%–

47Placer County, CACA442,08194.2%–

48Santa Cruz County, CACA258,85294.2%–

49Ventura County, CACA830,85194.2%–

50Alameda County, CACA1,636,63094.4%–

51Sonoma County, CACA486,44494.4%–

52San Diego County, CACA3,282,24894.9%–

53Orange County, CACA3,149,50795.0%–

54San Benito County, CACA70,08295.2%–

55Contra Costa County, CACA1,170,07095.6%–

56Santa Clara County, CACA1,914,39195.6%–

57San Mateo County, CACA743,56895.7%–

58Marin County, CACA253,69495.8%–

SHOWING 1–58 OF 58

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES