STD Rates in Lake County, Illinois
2023 CDC surveillance data for Lake County, Illinois — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Lake County reported a combined STD rate of 461.9 per 100,000 residents in 2023, placing it 27th of 102 Illinois counties — in the upper half of the state. Reported infections included chlamydia at 382.4 per 100,000 (2,710 cases, 31% below the state rate), gonorrhea at 75.3 per 100,000 (534 cases, 63% below the state rate), syphilis at 4.2 per 100,000 (30 cases, 64% below the state rate). Confidential STD testing is available throughout Lake County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Lake 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.
Know your status — get tested today
Same-day testing at 4,500+ locations. No appointment needed. Results in 1–3 days.
Lake County vs Illinois and the US
| Infection | Lake County | Illinois | US | vs Illinois | vs US | Rank in Illinois |
|---|---|---|---|---|---|---|
| Chlamydia | 382.42,710 cases | 557.7 | 490.7 | 31.4% below | 22.1% below | 26th of 102 |
| Gonorrhea | 75.3534 cases | 202.3 | 178.2 | 62.8% below | 57.7% below | 48th of 102 |
| Syphilis (P&S) | 4.230 cases | 11.6 | 15.8 | 63.8% below | 73.4% below | 48th 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.
Find a clinic near you
4,500+ testing locations nationwide. 100% confidential. Most insurance accepted.
