STD Rates in Lasalle County, Illinois
2023 CDC surveillance data for Lasalle County, Illinois — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Lasalle County recorded a combined STD rate of 291.8 per 100,000 residents in 2023, ranking 60th of 102 counties in Illinois. Reported infections included chlamydia at 232.7 per 100,000 (252 cases, 58% below the state rate), gonorrhea at 55.4 per 100,000 (60 cases, 73% below the state rate), syphilis at 3.7 per 100,000 (4 cases, too few for a reliable comparison). Confidential STD testing is available throughout Lasalle County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Lasalle 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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Lasalle County vs Illinois and the US
| Infection | Lasalle County | Illinois | US | vs Illinois | vs US | Rank in Illinois |
|---|---|---|---|---|---|---|
| Chlamydia | 232.7252 cases | 557.7 | 490.7 | 58.3% below | 52.6% below | 55th of 102 |
| Gonorrhea | 55.460 cases | 202.3 | 178.2 | 72.6% below | 68.9% below | 62nd of 102 |
| Syphilis (P&S) | 3.74 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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