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California reported 143,918 people living with diagnosed HIV at year-end 2024, or 367.4 per 100,000 residents. CDPH’s report, released in June 2026, also lists 4,538 new diagnoses during 2024 and 68.4% viral suppression among people living with diagnosed HIV. These are diagnosed counts; they do not include an estimate of everyone with undiagnosed HIV.[1]
California's current count
CDPH’s 2024 report uses information received through December 31, 2025. It counts 143,918 people living with diagnosed HIV based on the most recent available address, with 109,541 (76.1%) meeting its in-care measure and 98,467 (68.4%) meeting its viral-suppression measure. New diagnoses are not the same as new infections: someone diagnosed in 2024 may have acquired HIV earlier.[1]
CDC’s separate year-end 2024 state table reports 143,553 people of all ages living with diagnosed HIV in California, the largest state count in that table. Its total comprises 143,488 people aged 13 or older and 65 children younger than 13. Use one reporting series for comparisons; the CDC and CDPH totals differ, and these sources do not establish a single explanation for the exact difference.[5]
Where in California people are living with HIV
CDPH’s 2024 county counts include Los Angeles 52,731; San Diego 14,307; San Francisco 11,595; Riverside 11,236; Orange 7,660; Alameda 6,212; San Bernardino 5,622; Sacramento 4,901; and Santa Clara 4,094. Los Angeles accounts for 36.6% of the state total. Long Beach’s 3,930 and Pasadena’s 626 are already included in Los Angeles County; Berkeley’s 468 is already included in Alameda. Do not add these city subtotals again.[1]
Los Angeles County’s 2024 annual report separately estimated 56,600 people aged 13 or older living with HIV in 2023, including undiagnosed infection (95% confidence interval 54,900–58,400). That modeled estimate is not directly comparable with a diagnosed-only count. San Francisco’s 2024 report lists 15,400 people who were residents at diagnosis, but only 11,552 with a known current city address, including people diagnosed elsewhere. Its headline figure must not be presented as the number currently residing in the city. The newer preliminary 2025 report retains the residence-at-diagnosis scope; details follow below.[2][3][4]
California's eight EHE priority counties
California’s eight EHE priority counties are Alameda, Los Angeles, Orange, Riverside, Sacramento, San Bernardino, San Diego and San Francisco.[6] Adding their county totals in CDPH’s 2024 table gives 114,264 people living with diagnosed HIV, or 79.4% of California’s total. This is our calculation from the county rows; city subtotals are not added separately.[1]
CDPH’s 2024 care table compares observed results with the 2025 benchmarks printed in that report. Its 68.4% suppression figure uses all people living with diagnosed HIV as the denominator. It defines suppression using the most recent viral-load result in the year at or below 200 copies/mL, and in-care status by at least one CD4, viral-load or HIV genotype test. People without a reported qualifying result remain in the denominator; this percentage is not a measure of how often treatment works among everyone taking it.[1]
The trend line, statewide and in San Francisco
In the revised 2020–2024 series, CDPH counts 139,577, 141,137, 142,986, 143,792 and 143,918 people living with diagnosed HIV. New diagnoses were 4,192, 4,657, 4,972, 5,004 and 4,538, respectively. The last change is a calculated 9.3% decline from 2023 to 2024. Compare these revised figures within this report; mixing older releases can distort the trend.[1]
San Francisco’s preliminary 2025 report lists 139 diagnoses and 15,253 people living with diagnosed HIV in its residence-at-diagnosis cohort, using reports received by February 3, 2026.[4] Its revised series lists 330 diagnoses in 2014, 140 in 2023 and 148 in 2024. The 2025 figures are incomplete because of reporting delays; they should not be treated as a final decline or substituted for CDPH’s count of current residents.[3][2]
Related questions
Which California county has the most people living with HIV?
Los Angeles County has the largest count in CDPH’s 2024 report: 52,731 people living with diagnosed HIV, or 36.6% of California’s total. This county figure already includes Long Beach and Pasadena.[1]
Is San Francisco's Getting to Zero effort working?
The long-term diagnosis trend is lower than a decade earlier, but the most recent year is preliminary. San Francisco’s 2025 report lists 139 diagnoses, compared with revised counts of 148 in 2024 and 330 in 2014. Its residence-at-diagnosis cohort is different from a count of people currently living in the city.[3][4]
How many Californians with HIV are virally suppressed?
CDPH reports 98,467 people, or 68.4% of all people living with diagnosed HIV, as virally suppressed in 2024. Its in-care count is 109,541 (76.1%). These measures overlap; they are not separate groups to add together.[1]
Are new HIV diagnoses rising in California?
The latest CDPH series shows 4,538 new diagnoses in 2024 versus a revised 5,004 in 2023, a calculated decline of 9.3%. Diagnoses are not the same as infections acquired during that year, and numbers can change as surveillance records are updated.[1]
Related from RiseUpToHIV
References & Sources
- CDPH — California HIV Surveillance Report 2024, released June 2026; tables 1a, 2a, 2c and 2d, with technical notes. Data reported through December 31, 2025. Source. ↩↩↩↩↩↩↩↩↩ ↩ ↩ ↩ ↩
- Los Angeles County DHSP — 2024 Annual HIV Surveillance Report; 2023 modeled prevalence including undiagnosed infection. Source. ↩↩ ↩ ↩
- SFDPH — HIV Epidemiology Annual Report 2024; table 1.4 distinguishes residence at diagnosis from most recent address. Source. ↩ ↩ ↩ ↩
- SFDPH — Preliminary HIV Surveillance Annual Report 2025; reports through February 3, 2026, with incomplete 2025 data. Summary and table 9. Source. ↩ ↩ ↩ ↩
- CDC — 2024 HIV surveillance data-release workbook, table 16; all-age and age-specific state prevalence. Source. ↩ ↩
- HIV.gov — EHE priority jurisdictions; California’s eight priority counties. Source. ↩
Community publications like POZ, Positively Aware, and TheBody inform framing and lived-experience context on RiseUpToHIV. Every clinical, epidemiological, or public-health claim above is anchored to a primary source.