RANKING · 2024 ACS · 58 SHOWN OF 58

Lowest fertility rate, California counties

California counties with the lowest general fertility rate, births per 1,000 women ages 15-50 in the past 12 months (2024 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

YEAR2010 2024

RANKPLACESTATEPOPBIRTHS PER 1,000 WOMEN (15-50)VS 2010

01Sierra County, CACA3,0981.9−64%

02Inyo County, CACA18,15815.4−84%

03Mariposa County, CACA16,91816.6−73%

04Humboldt County, CACA131,64729.6−50%

05Yolo County, CACA224,41037.5−22%

06Plumas County, CACA18,58337.6−20%

07San Francisco County, CACA826,07937.9−3%

08Mono County, CACA12,50538.8+89%

09Butte County, CACA209,21139.1−29%

10Shasta County, CACA181,64841.4−29%

11El Dorado County, CACA192,32342.2−5%

12Los Angeles County, CACA9,694,93442.3−20%

13Santa Clara County, CACA1,914,39142.7−30%

14Nevada County, CACA101,91142.9−14%

15Trinity County, CACA15,72043.0−15%

16Napa County, CACA132,94943.4−26%

17Orange County, CACA3,149,50744.0−18%

18Del Norte County, CACA26,41044.1−29%

19San Luis Obispo County, CACA282,36744.6−6%

20Alameda County, CACA1,636,63045.3−7%

21Lassen County, CACA28,11746.1−40%

22Santa Cruz County, CACA258,85246.1−11%

23Santa Barbara County, CACA442,06546.2−12%

24Siskiyou County, CACA42,01347.2−11%

25Monterey County, CACA433,72947.6−25%

26San Mateo County, CACA743,56849.0−11%

27Sonoma County, CACA486,44449.4+6%

28Stanislaus County, CACA557,71949.6−24%

29San Benito County, CACA70,08249.6+1%

30San Diego County, CACA3,282,24850.7−9%

31Sacramento County, CACA1,618,46051.0−11%

32Riverside County, CACA2,544,91651.8−16%

33Ventura County, CACA830,85151.8−6%

34San Bernardino County, CACA2,224,09151.9−15%

35San Joaquin County, CACA823,81552.4−23%

36Fresno County, CACA1,035,45654.3−24%

37Tuolumne County, CACA53,16054.8−0%

38Contra Costa County, CACA1,170,07055.6+9%

39Placer County, CACA442,08157.0+9%

40Imperial County, CACA181,41157.6−17%

41Marin County, CACA253,69457.7+34%

42Merced County, CACA297,26058.1−29%

43Mendocino County, CACA88,12259.2+19%

44Tulare County, CACA485,14660.8−26%

45Kern County, CACA927,06862.0−16%

46Solano County, CACA455,37662.1−6%

47Sutter County, CACA98,78764.8+2%

48Tehama County, CACA64,66571.7−9%

49Glenn County, CACA28,14173.4−3%

50Kings County, CACA154,32774.7+14%

51Yuba County, CACA88,69176.2−8%

52Lake County, CACA67,77277.2+55%

53Madera County, CACA167,92779.8+35%

54Amador County, CACA41,87682.1+90%

55Colusa County, CACA21,83693.3+63%

56Modoc County, CACA8,426112.4+111%

57Calaveras County, CACA46,605122.6+224%

58Alpine County, CACA1,043196.9+505%

SHOWING 1–58 OF 58

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES