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 (2023 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RANKPLACESTATEPOPBROADBAND INTERNET SUBSCRIPTIONVS 2000

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 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES