STD Rates in Lassen County, California
2023 CDC surveillance data for Lassen County, California — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Lassen County is among the lower-burden counties in California, reporting a combined STD rate of 145.6 per 100,000 residents in 2023 — 55th of 58 counties. Reported infections included chlamydia at 131.7 per 100,000 (38 cases, 73% below the state rate), gonorrhea at 13.9 per 100,000 (4 cases, too few for a reliable comparison). No syphilis cases were reported in Lassen County in 2023. Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Lassen County.
STD Trends in Lassen 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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Lassen County vs California and the US
| Infection | Lassen County | California | US | vs California | vs US | Rank in California |
|---|---|---|---|---|---|---|
| Chlamydia | 131.738 cases | 491.1 | 490.7 | 73.2% below | 73.2% below | 55th of 58 |
| Gonorrhea | 13.94 cases | 190.2 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 00 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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