STD Rates in Placer County, California
2023 CDC surveillance data for Placer County, California — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Placer County is among the lower-burden counties in California, reporting a combined STD rate of 250.0 per 100,000 residents in 2023 — 49th of 58 counties. Reported infections included chlamydia at 197.6 per 100,000 (837 cases, 60% below the state rate), gonorrhea at 48.4 per 100,000 (205 cases, 75% below the state rate), syphilis at 4.0 per 100,000 (17 cases, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Placer County.
STD Trends in Placer 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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Placer County vs California and the US
| Infection | Placer County | California | US | vs California | vs US | Rank in California |
|---|---|---|---|---|---|---|
| Chlamydia | 197.6837 cases | 491.1 | 490.7 | 59.8% below | 59.7% below | 48th of 58 |
| Gonorrhea | 48.4205 cases | 190.2 | 178.2 | 74.6% below | 72.8% below | 47th of 58 |
| Syphilis (P&S) | 417 cases | 16.3 | 15.8 | Too few cases | Too few cases | – |
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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