RANKING · 2020 CENSUS · 58 SHOWN OF 58

Fewest graduate degrees, California counties · 2020

California counties with the smallest share of adults 25+ holding a graduate or professional degree (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

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPGRADUATE DEGREEVS 2000

01Glenn County, CACA28,1413.1%+7%

02Colusa County, CACA21,8363.4%+21%

03Lassen County, CACA28,1173.5%+18%

04Imperial County, CACA181,4114.4%+18%

05Madera County, CACA167,9274.4%+16%

06Merced County, CACA297,2604.5%+31%

07Tulare County, CACA485,1464.8%+28%

08Tehama County, CACA64,6654.8%+64%

09Kings County, CACA154,3275.0%+82%

10Yuba County, CACA88,6915.4%+52%

11Stanislaus County, CACA557,7195.4%+21%

12San Benito County, CACA70,0825.5%+7%

13Lake County, CACA67,7725.6%+24%

14Kern County, CACA927,0685.7%+29%

15Amador County, CACA41,8765.8%−5%

16Del Norte County, CACA26,4105.9%+98%

17Modoc County, CACA8,4265.9%+66%

18San Joaquin County, CACA823,8156.2%+42%

19Calaveras County, CACA46,6056.3%+12%

20Trinity County, CACA15,7206.6%+35%

21Sutter County, CACA98,7876.9%+56%

22Shasta County, CACA181,6487.3%+38%

23Fresno County, CACA1,035,4567.4%+34%

24San Bernardino County, CACA2,224,0917.4%+35%

25Siskiyou County, CACA42,0137.7%+29%

26Tuolumne County, CACA53,1607.8%+31%

27Riverside County, CACA2,544,9168.3%+41%

28Solano County, CACA455,3768.6%+36%

29Plumas County, CACA18,5838.9%+54%

30Mariposa County, CACA16,9189.0%+53%

31Mendocino County, CACA88,1229.2%+16%

32Inyo County, CACA18,1589.9%+50%

33Butte County, CACA209,2119.9%+42%

34Humboldt County, CACA131,64710.2%+38%

35Monterey County, CACA433,72910.4%+20%

36Mono County, CACA12,50510.6%+6%

37Sierra County, CACA3,09810.6%+83%

38Sacramento County, CACA1,618,46010.9%+35%

39El Dorado County, CACA192,32311.6%+38%

40Los Angeles County, CACA9,694,93411.7%+34%

41Ventura County, CACA830,85112.3%+30%

42Napa County, CACA132,94912.8%+36%

43Nevada County, CACA101,91112.9%+47%

44Sonoma County, CACA486,44413.6%+40%

45San Luis Obispo County, CACA282,36713.8%+47%

46Placer County, CACA442,08113.9%+46%

47Santa Barbara County, CACA442,06514.1%+24%

48Orange County, CACA3,149,50714.9%+43%

49San Diego County, CACA3,282,24815.3%+41%

50Contra Costa County, CACA1,170,07016.6%+36%

51Santa Cruz County, CACA258,85217.4%+40%

52Alpine County, CACA1,04318.6%+122%

53Alameda County, CACA1,636,63020.6%+50%

54Yolo County, CACA224,41020.8%+30%

55San Mateo County, CACA743,56822.6%+55%

56San Francisco County, CACA826,07923.7%+45%

57Santa Clara County, CACA1,914,39125.6%+55%

58Marin County, CACA253,69425.8%+26%

SHOWING 1–58 OF 58

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