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childhood lead poisoning prevention branch

Percent of Children with a Blood Lead Level (BLL) of 4.5 mcg/dL or Greater, in Descending Order, by ZIP Code, 2020

ZIP CodePostal District NameNumber of children under 6 with a BLL of 4.5 µg/dL or greaterPercent of children under 6 with a BLL of 4.5 µg/dL or greaterTotal number of children under 6 with a BLL
95821Sacramento10113.87%728
95608Carmichael519.64%529
94536Fremont24
4.15%579
94538Fremont234.01%574
90037Los Angeles363.79%950
95051Santa Clara193.61%527
92021El Cajon303.08%975
90042Los Angeles122.82%426
93638Madera472.66%1,769
90006Los Angeles182.62%686
90026Los Angeles132.50%520
95670Rancho Cordova112.44%450
90002Los Angeles212.39%877
95240Lodi122.39%502
95823Sacramento222.38%923
95035Milpitas162.38%672
90011Los Angeles432.38%1,809
95076Watsonville252.36%1,059
92126San Diego112.33%472
95350Modesto112.24%492
90018Los Angeles122.22%540
90044Los Angeles282.19%1,276
91762Ontario162.12%755
94110San Francisco142.11%663
92410San Bernardino162.05%782
92701Santa Ana151.99%752
93436Lompoc131.97%661
93308Bakersfield131.96%663
92243El Centro131.82%713
93230Hanford111.78%618
92703Santa Ana171.77%959
92020El Cajon171.77%963
90063Los Angeles111.75%627
94601Oakland111.70%646
92804Anaheim161.65%967
92707Santa Ana121.59%757
92105San Diego171.57%1,083
94533Fairfield121.50%801
90022Los Angeles111.48%742
94544Hayward131.47%882
93274Tulare121.33%899
93727Fresno151.27%1,181
95206Stockton151.26%1,190
91910Chula Vista131.25%1,040
90001Los Angeles111.21%911
90255Huntington Park111.13%972
93906Salinas121.11%1,082
93905Salinas141.10%1,274
93307Bakersfield181.03%1,752
90003Los Angeles121.00%1,203
92113San Diego111.00%1,103
93306Bakersfield111.00%1,103
93458Santa Maria180.98%1,841
90201Bell Gardens120.90%1,326
92335Fontana80.59%1,356
90650Norwalk70.55%1,276
92336Fontana50.49%1,016
91331Pacoima20.18%1,115

Table Notes:

  • Data are from the RASSCLE surveillance database archive of 7/30/2021.
  • Each individual is counted only once, using their highest blood lead level during 2020.
  • Measures are in micrograms per deciliter (µg/dL) of whole blood and include arterial, cord, venous, capillary, and unknown samples. Not all elevated capillary samples are confirmed by a follow-up venous sample.
  • Results later determined to be false positives and errors have been excluded.
  • All results of blood lead analyses are reportable under California law, and the State works to ensure complete reporting. Results that are not submitted to the State, however, would not be included here.
  • Those BLLs reported as "< 5 µg/dL" from an analyzing laboratory that routinely reported  "< 5 µg/dL" as their limit of detection in 2020 are included in the category "BLL < 4.5 µg/dL."
  • Patient ZIP code is determined by geocoding patient address using Esri's StreetMap Premium North America locator.
  • Data are suppressed for ZIP codes that did not have enough blood lead tests in 2020 to meet the California Health and Human Services Agency's Data De-Identification Guidelines for public release. Therefore, not all ZIP codes are shown in this table.

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