RANKING · 2024 ACS · 58 SHOWN OF 58

Most public transit riders, California counties

California counties with the most workers commuting by public transportation, as of the 2024 American Community Survey. Ranked by number of commuters, not the transit share. This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 565. Biggest climber in the top 100 since 2020: Colusa County, CA, up 11 places to #44.

CaliforniaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2020 2024

RANKPLACESTATEPOPTRANSIT COMMUTERSVS 2020

01Los Angeles County, CACA9,694,934183,355−29%

02San Francisco County, CACA826,07987,355−46%

03Alameda County, CACA1,636,63064,325−44%

04▲1San Diego County, CACA3,282,24831,598−26%

05▼1Contra Costa County, CACA1,170,07029,697−47%

06▲1Santa Clara County, CACA1,914,39122,653−42%

07▼1San Mateo County, CACA743,56819,475−53%

08Orange County, CACA3,149,50718,009−35%

09Sacramento County, CACA1,618,4609,819−37%

10San Bernardino County, CACA2,224,0918,664−25%

11Riverside County, CACA2,544,9167,807−29%

12Marin County, CACA253,6944,443−56%

13Santa Barbara County, CACA442,0654,440−28%

14▲5Fresno County, CACA1,035,4563,318−11%

15San Joaquin County, CACA823,8153,011−40%

16▼2Solano County, CACA455,3762,980−47%

17▼1Yolo County, CACA224,4102,900−29%

18Sonoma County, CACA486,4442,622−33%

19▼2Ventura County, CACA830,8512,445−39%

20Santa Cruz County, CACA258,8522,384−20%

21Monterey County, CACA433,7292,145−12%

22▲2Stanislaus County, CACA557,7191,935+14%

23▼1Kern County, CACA927,0681,299−43%

24▼1Placer County, CACA442,0811,050−43%

25▲2Tulare County, CACA485,146783−30%

26▲5Napa County, CACA132,949752−20%

27▼1San Luis Obispo County, CACA282,367739−42%

28▲1Humboldt County, CACA131,647572−43%

29▲1Merced County, CACA297,260565−40%

30▼2Butte County, CACA209,211499−51%

31▲1El Dorado County, CACA192,323431−53%

32▲2Shasta County, CACA181,648403−2%

33▲2Sutter County, CACA98,787255−37%

34▲4San Benito County, CACA70,082251+47%

35▲5Kings County, CACA154,327231+55%

36▼3Imperial County, CACA181,411195−55%

37▲8Nevada County, CACA101,911174+115%

38▲1Lake County, CACA67,772172+8%

39▼3Madera County, CACA167,927172−23%

40▼3Yuba County, CACA88,691169−3%

41▲1Mariposa County, CACA16,918147+48%

42▼1Calaveras County, CACA46,60592−35%

43▲7Siskiyou County, CACA42,01388+144%

44▲11Colusa County, CACA21,83676+485%

45▲7Del Norte County, CACA26,41076+145%

46▲5Amador County, CACA41,87668+94%

47▼22Mono County, CACA12,50564−95%

48▼2Mendocino County, CACA88,12262−7%

49▼1Inyo County, CACA18,15855−8%

50▼3Trinity County, CACA15,72041−33%

51▲2Lassen County, CACA28,11732+23%

52▼8Tehama County, CACA64,66532−64%

53▲1Glenn County, CACA28,14114−42%

54▼11Tuolumne County, CACA53,1607−92%

55▲1Alpine County, CACA1,0432−50%

56▲2Modoc County, CACA8,4260–

57▼8Plumas County, CACA18,5830−100%

58▼1Sierra County, CACA3,0980−100%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES