STD Rates in St. Clair County, Missouri
2023 CDC surveillance data for St. Clair County, Missouri — chlamydia, gonorrhea, and syphilis rates with state comparisons.
St. Clair County is among the lower-burden counties in Missouri, reporting a combined STD rate of 174.3 per 100,000 residents in 2023 — 93rd of 115 counties. Reported infections included chlamydia at 153.8 per 100,000 (15 cases, too few for a reliable comparison), gonorrhea at 20.5 per 100,000 (2 cases, too few for a reliable comparison). No syphilis cases were reported in St. Clair County in 2023. Confidential STD testing is available throughout St. Clair County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in St. Clair County, 2000–2023
Reported cases per 100,000 residents each year, against the Missouri 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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St. Clair County vs Missouri and the US
| Infection | St. Clair County | Missouri | US | vs Missouri | vs US | Rank in Missouri |
|---|---|---|---|---|---|---|
| Chlamydia | 153.815 cases | 498.6 | 490.7 | Too few cases | Too few cases | – |
| Gonorrhea | 20.52 cases | 201.9 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 00 cases | 21.5 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Missouri’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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