STD Rates in Dupage County, Illinois
2023 CDC surveillance data for Dupage County, Illinois — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Dupage County reported a combined STD rate of 321.6 per 100,000 residents in 2023, placing it 49th of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 261.8 per 100,000 (2,412 cases, 53% below the state rate), gonorrhea at 57.4 per 100,000 (529 cases, 72% below the state rate), syphilis at 2.4 per 100,000 (22 cases, 79% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Dupage County.
STD Trends in Dupage 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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Dupage County vs Illinois and the US
| Infection | Dupage County | Illinois | US | vs Illinois | vs US | Rank in Illinois |
|---|---|---|---|---|---|---|
| Chlamydia | 261.82,412 cases | 557.7 | 490.7 | 53.1% below | 46.6% below | 48th of 102 |
| Gonorrhea | 57.4529 cases | 202.3 | 178.2 | 71.6% below | 67.8% below | 60th of 102 |
| Syphilis (P&S) | 2.422 cases | 11.6 | 15.8 | 79.3% below | 84.8% below | 59th of 102 |
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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