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About this map

Share of households with a broadband internet subscription (cable, fiber, DSL, satellite or a cellular data plan).

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
91%
California
93.5%
Rankings
Full list

Top and bottom zip codes in California

Zip codes with 1,000+ residents

Zip codes with the most broadband access

See all
  1. 193410San Luis Obispo100%
  2. 292136San Diego100%
  3. 395671Represa100%
  4. 493437Lompoc100%
  5. 590704Avalon100%
  6. 693944Monterey100%
  7. 791330Northridge100%
  8. 894964San Quentin100%
  9. 995389Yosemite National Park100%
  10. 1092386Sugarloaf100%

Zip codes with the least broadband access

See all
  1. 195053Santa Clara0%
  2. 295365Planada58.3%
  3. 392617Irvine62.6%
  4. 495428Covelo63%
  5. 594305Stanford64%
  6. 693201Alpaugh64.7%
  7. 792398Yermo64.8%
  8. 891934Jacumba65.2%
  9. 993106Santa Barbara65.2%
  10. 1096109Doyle65.6%

Broadband access by county in California

  1. 1Marin County95.8%
  2. 2San Mateo County95.7%
  3. 3Contra Costa County95.6%
  4. 4Santa Clara County95.6%
  5. 5San Benito County95.2%
  6. 6Orange County95%
  7. 7San Diego County94.9%
  8. 8Alameda County94.4%
  9. 9Sonoma County94.4%
  10. 10Placer County94.2%
  11. 11Santa Cruz County94.2%
  12. 12Ventura County94.2%
  13. 13Sacramento County94%
  14. 14Monterey County93.8%
  15. 15Solano County93.8%
  16. 16Riverside County93.6%
  17. 17Napa County93.5%
  18. 18San Bernardino County93.3%
  19. 19San Luis Obispo County93.1%
  20. 20Los Angeles County93%
  21. 21Nevada County93%
  22. 22San Francisco County93%
  23. 23El Dorado County92.5%
  24. 24San Joaquin County92.5%
  25. 25Santa Barbara County92.5%
  26. 26Mono County92.4%
  27. 27Yolo County92.3%
  28. 28Stanislaus County92.1%
  29. 29Butte County91.8%
  30. 30Yuba County91.8%
  31. 31Kern County91.6%
  32. 32Del Norte County91.4%
  33. 33Shasta County91.3%
  34. 34Madera County91%
  35. 35Humboldt County90.9%
  36. 36Alpine County90.6%
  37. 37Sutter County90.6%
  38. 38Imperial County90.1%
  39. 39Tulare County89.7%
  40. 40Mendocino County89.6%
  41. 41Glenn County89.5%
  42. 42Fresno County88.9%
  43. 43Tuolumne County88.8%
  44. 44Lassen County88.7%
  45. 45Siskiyou County88.5%
  46. 46Merced County88.4%
  47. 47Amador County88.2%
  48. 48Tehama County88%
  49. 49Mariposa County87.9%
  50. 50Modoc County87.4%
  51. 51Lake County87.1%
  52. 52Kings County86.8%
  53. 53Calaveras County85.5%
  54. 54Plumas County85.5%
  55. 55Inyo County85.1%
  56. 56Colusa County84.6%
  57. 57Trinity County81.9%
  58. 58Sierra County79.5%

Questions about this map

Which zip code has the highest broadband access in California?

Among zip codes with at least 1,000 residents, 93410 (San Luis Obispo, CA) has the highest: 100%.

Which zip code has the lowest broadband access in California?

95053 (Santa Clara, CA) has the lowest: 0%.

What is the broadband access for the United States?

91%; in California it is 93.5%.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Share of households with a broadband internet subscription (cable, fiber, DSL, satellite or a cellular data plan).

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