STD Rates in Rock County, Wisconsin
2023 CDC surveillance data for Rock County, Wisconsin — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Rock County has one of the higher STD burdens in Wisconsin, with a combined rate of 566.6 per 100,000 residents in 2023 — ranking 4th of 72 counties. Reported infections included chlamydia at 414.5 per 100,000 (681 cases, 2% below the state rate), gonorrhea at 149.1 per 100,000 (245 cases, 26% above the state rate), syphilis at 3.0 per 100,000 (5 cases, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Rock County.
STD Trends in Rock County, 2000–2023
Reported cases per 100,000 residents each year, against the Wisconsin 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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Rock County vs Wisconsin and the US
| Infection | Rock County | Wisconsin | US | vs Wisconsin | vs US | Rank in Wisconsin |
|---|---|---|---|---|---|---|
| Chlamydia | 414.5681 cases | 422.8 | 490.7 | 2% below | 15.5% below | 8th of 72 |
| Gonorrhea | 149.1245 cases | 118.5 | 178.2 | 25.8% above | 16.3% below | 4th of 72 |
| Syphilis (P&S) | 35 cases | 9.1 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Wisconsin’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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