STD Rates in Yankton County, South Dakota
2023 CDC surveillance data for Yankton County, South Dakota — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Yankton County reported a combined STD rate of 357.2 per 100,000 residents in 2023, placing it 32nd of 64 South Dakota counties — in the upper half of the state. Reported infections included chlamydia at 293.4 per 100,000 (69 cases, 45% below the state rate), gonorrhea at 59.5 per 100,000 (14 cases, too few for a reliable comparison), syphilis at 4.3 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. Yankton County has confidential testing locations available.
STD Trends in Yankton County, 2000–2023
Reported cases per 100,000 residents each year, against the South Dakota 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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Yankton County vs South Dakota and the US
| Infection | Yankton County | South Dakota | US | vs South Dakota | vs US | Rank in South Dakota |
|---|---|---|---|---|---|---|
| Chlamydia | 293.469 cases | 531.6 | 490.7 | 44.8% below | 40.2% below | 30th of 64 |
| Gonorrhea | 59.514 cases | 253.3 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 4.31 case | 73.4 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among South Dakota’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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