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About this map

Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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

U.S.
95/sq mi
California
252/sq mi
Rankings
Full list

Top and bottom zip codes in California

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 194102San Francisco54,344/sq mi
  2. 290057Los Angeles52,988/sq mi
  3. 394109San Francisco50,559/sq mi
  4. 494108San Francisco43,818/sq mi
  5. 590017Los Angeles42,676/sq mi
  6. 694133San Francisco36,176/sq mi
  7. 790020Los Angeles35,067/sq mi
  8. 890014Los Angeles34,194/sq mi
  9. 990005Los Angeles33,171/sq mi
  10. 1094115San Francisco28,723/sq mi

Most sparsely populated zip codes

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  1. 193252Maricopa3/sq mi
  2. 296051Lakehead3/sq mi
  3. 392004Borrego Springs3/sq mi
  4. 493453Santa Margarita3/sq mi
  5. 593518Caliente4/sq mi
  6. 693545Lone Pine4/sq mi
  7. 793513Big Pine4/sq mi
  8. 892365Newberry Springs5/sq mi
  9. 996027Etna5/sq mi
  10. 1096032Fort Jones5/sq mi

Population density by county in California

  1. 1San Francisco County17,784/sq mi
  2. 2Orange County3,993/sq mi
  3. 3Los Angeles County2,416/sq mi
  4. 4Alameda County2,237/sq mi
  5. 5San Mateo County1,655/sq mi
  6. 6Sacramento County1,651/sq mi
  7. 7Contra Costa County1,625/sq mi
  8. 8Santa Clara County1,473/sq mi
  9. 9San Diego County781/sq mi
  10. 10Santa Cruz County595/sq mi
  11. 11San Joaquin County573/sq mi
  12. 12Solano County550/sq mi
  13. 13Marin County496/sq mi
  14. 14Ventura County455/sq mi
  15. 15Stanislaus County370/sq mi
  16. 16Riverside County344/sq mi
  17. 17Sonoma County308/sq mi
  18. 18Placer County298/sq mi
  19. 19Yolo County218/sq mi
  20. 20Napa County179/sq mi
  21. 21Fresno County171/sq mi
  22. 22Sutter County164/sq mi
  23. 23Santa Barbara County162/sq mi
  24. 24Merced County150/sq mi
  25. 25Yuba County134/sq mi
  26. 26Monterey County133/sq mi
  27. 27Butte County127/sq mi
  28. 28El Dorado County113/sq mi
  29. 29Kern County113/sq mi
  30. 30Kings County110/sq mi
  31. 31San Bernardino County110/sq mi
  32. 32Nevada County107/sq mi
  33. 33Tulare County99/sq mi
  34. 34San Luis Obispo County85/sq mi
  35. 35Madera County75/sq mi
  36. 36Amador County70/sq mi
  37. 37Lake County54/sq mi
  38. 38San Benito County49/sq mi
  39. 39Shasta County48/sq mi
  40. 40Calaveras County45/sq mi
  41. 41Imperial County43/sq mi
  42. 42Humboldt County38/sq mi
  43. 43Del Norte County27/sq mi
  44. 44Mendocino County26/sq mi
  45. 45Tuolumne County25/sq mi
  46. 46Tehama County22/sq mi
  47. 47Glenn County22/sq mi
  48. 48Colusa County19/sq mi
  49. 49Mariposa County12/sq mi
  50. 50Plumas County8/sq mi
  51. 51Siskiyou County7/sq mi
  52. 52Lassen County7/sq mi
  53. 53Trinity County5/sq mi
  54. 54Mono County4/sq mi
  55. 55Sierra County3/sq mi
  56. 56Alpine County2/sq mi
  57. 57Modoc County2/sq mi
  58. 58Inyo County2/sq mi

Questions about this map

Which zip code has the highest population density in California?

Among zip codes with at least 1,000 residents, 94102 (San Francisco, CA) has the highest: 54,344/sq mi.

Which zip code has the lowest population density in California?

93252 (Maricopa, CA) has the lowest: 3/sq mi.

What is the population density for the United States?

95/sq mi; in California it is 252/sq mi.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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