STD Rates in Jefferson County, Missouri
2023 CDC surveillance data for Jefferson County, Missouri — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Jefferson County reported a combined STD rate of 322.2 per 100,000 residents in 2023, placing it 51st of 115 Missouri counties — in the upper half of the state. Reported infections included chlamydia at 237.9 per 100,000 (550 cases, 52% below the state rate), gonorrhea at 73.1 per 100,000 (169 cases, 64% below the state rate), syphilis at 11.2 per 100,000 (26 cases, 48% below the state rate). Confidential STD testing is available throughout Jefferson County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Jefferson 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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Jefferson County vs Missouri and the US
| Infection | Jefferson County | Missouri | US | vs Missouri | vs US | Rank in Missouri |
|---|---|---|---|---|---|---|
| Chlamydia | 237.9550 cases | 498.6 | 490.7 | 52.3% below | 51.5% below | 55th of 115 |
| Gonorrhea | 73.1169 cases | 201.9 | 178.2 | 63.8% below | 59% below | 41st of 115 |
| Syphilis (P&S) | 11.226 cases | 21.5 | 15.8 | 47.9% below | 29.1% below | 52nd of 115 |
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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