RANKING · 1990 CENSUS · 58 SHOWN OF 58

Most educated, California counties · 1990

California counties ranked by the share of adults 25+ holding a bachelor's degree or higher (1990 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 16.8%.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS –

01Marin County, CACA253,69444.0%–

02San Francisco County, CACA826,07935.0%–

03Santa Clara County, CACA1,914,39132.6%–

04Contra Costa County, CACA1,170,07031.6%–

05San Mateo County, CACA743,56831.3%–

06Yolo County, CACA224,41030.3%–

07Santa Cruz County, CACA258,85229.7%–

08Alameda County, CACA1,636,63028.8%–

09Orange County, CACA3,149,50727.8%–

10Santa Barbara County, CACA442,06526.6%–

11San Diego County, CACA3,282,24825.3%–

12Sonoma County, CACA486,44424.5%–

13Alpine County, CACA1,04324.0%–

14Ventura County, CACA830,85123.0%–

15Sacramento County, CACA1,618,46023.0%–

16San Luis Obispo County, CACA282,36722.9%–

17Placer County, CACA442,08122.7%–

18Los Angeles County, CACA9,694,93422.3%–

19Napa County, CACA132,94922.3%–

20Nevada County, CACA101,91122.1%–

21Mono County, CACA12,50521.9%–

22Monterey County, CACA433,72921.5%–

23El Dorado County, CACA192,32320.8%–

24Humboldt County, CACA131,64720.0%–

25Butte County, CACA209,21119.5%–

26Solano County, CACA455,37618.7%–

27Mendocino County, CACA88,12217.8%–

28Fresno County, CACA1,035,45616.9%–

29Mariposa County, CACA16,91816.8%–

30Sierra County, CACA3,09815.9%–

31Sutter County, CACA98,78715.4%–

32Plumas County, CACA18,58315.1%–

33San Bernardino County, CACA2,224,09114.9%–

34Tuolumne County, CACA53,16014.7%–

35Riverside County, CACA2,544,91614.6%–

36Calaveras County, CACA46,60514.4%–

37San Benito County, CACA70,08214.4%–

38Siskiyou County, CACA42,01314.2%–

39Amador County, CACA41,87614.0%–

40Shasta County, CACA181,64813.7%–

41Inyo County, CACA18,15813.5%–

42Kern County, CACA927,06813.3%–

43San Joaquin County, CACA823,81513.2%–

44Stanislaus County, CACA557,71913.0%–

45Trinity County, CACA15,72012.9%–

46Merced County, CACA297,26012.0%–

47Tulare County, CACA485,14611.8%–

48Madera County, CACA167,92711.7%–

49Lassen County, CACA28,11711.7%–

50Modoc County, CACA8,42611.2%–

51Colusa County, CACA21,83611.1%–

52Lake County, CACA67,77210.7%–

53Tehama County, CACA64,66510.2%–

54Del Norte County, CACA26,41010.0%–

55Imperial County, CACA181,4119.7%–

56Yuba County, CACA88,6919.5%–

57Glenn County, CACA28,1419.4%–

58Kings County, CACA154,3279.0%–

SHOWING 1–58 OF 58

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS