STD Rates in San Francisco County, California
2023 CDC surveillance data for San Francisco County, California — chlamydia, gonorrhea, and syphilis rates with state comparisons.
San Francisco County has one of the higher STD burdens in California, with a combined rate of 1,350.2 per 100,000 residents in 2023 — ranking 1st of 58 counties. Reported infections included chlamydia at 697.3 per 100,000 (5,641 cases, 42% above the state rate), gonorrhea at 620.0 per 100,000 (5,016 cases, 226% above the state rate), syphilis at 32.9 per 100,000 (266 cases, 102% above the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across San Francisco County.
STD Trends in San Francisco County, 2000–2023
Reported cases per 100,000 residents each year, against the California rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.
Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.
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San Francisco County vs California and the US
| Infection | San Francisco County | California | US | vs California | vs US | Rank in California |
|---|---|---|---|---|---|---|
| Chlamydia | 697.35,641 cases | 491.1 | 490.7 | 42% above | 42.1% above | 2nd of 58 |
| Gonorrhea | 6205,016 cases | 190.2 | 178.2 | 226% above | 247.9% above | 1st of 58 |
| Syphilis (P&S) | 32.9266 cases | 16.3 | 15.8 | 101.8% above | 108.2% above | 4th of 58 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among California’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.
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