STD Rates in Cass County, Illinois
2023 CDC surveillance data for Cass County, Illinois — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Cass County has one of the higher STD burdens in Illinois, with a combined rate of 563.6 per 100,000 residents in 2023 — ranking 23rd of 102 counties. Reported infections included chlamydia at 452.5 per 100,000 (57 cases, 19% below the state rate), gonorrhea at 103.2 per 100,000 (13 cases, too few for a reliable comparison), syphilis at 7.9 per 100,000 (1 case, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Cass County has confidential testing locations available.
STD Trends in Cass 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.
Cass County vs Illinois and the US
| Infection | Cass County | Illinois | US | vs Illinois | vs US | Rank in Illinois |
|---|---|---|---|---|---|---|
| Chlamydia | 452.557 cases | 557.7 | 490.7 | 18.9% below | 7.8% below | 20th of 102 |
| Gonorrhea | 103.213 cases | 202.3 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 7.91 case | 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.
Find a clinic near you
4,500+ testing locations nationwide. 100% confidential. Most insurance accepted.
