STD Rates in Richland County, Illinois
2023 CDC surveillance data for Richland County, Illinois — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Richland County reported a combined STD rate of 381.0 per 100,000 residents in 2023, placing it 42nd of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 271.2 per 100,000 (42 cases, 51% below the state rate), gonorrhea at 90.4 per 100,000 (14 cases, too few for a reliable comparison), syphilis at 19.4 per 100,000 (3 cases, too few for a reliable comparison). Confidential STD testing is available throughout Richland County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Richland County, 2000–2023
Reported cases per 100,000 residents each year, against the Illinois 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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Richland County vs Illinois and the US
| Infection | Richland County | Illinois | US | vs Illinois | vs US | Rank in Illinois |
|---|---|---|---|---|---|---|
| Chlamydia | 271.242 cases | 557.7 | 490.7 | 51.4% below | 44.7% below | 43rd of 102 |
| Gonorrhea | 90.414 cases | 202.3 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 19.43 cases | 11.6 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Illinois’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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