STD Rates in Corson County, South Dakota
2023 CDC surveillance data for Corson County, South Dakota — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Corson County has one of the higher STD burdens in South Dakota, with a combined rate of 2,247.5 per 100,000 residents in 2023 — ranking 9th of 64 counties. Reported infections included chlamydia at 1084.1 per 100,000 (41 cases, 104% above the state rate), gonorrhea at 555.3 per 100,000 (21 cases, 119% above the state rate), syphilis at 608.1 per 100,000 (23 cases, 728% above the state rate). Confidential STD testing is available throughout Corson County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Corson 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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Corson County vs South Dakota and the US
| Infection | Corson County | South Dakota | US | vs South Dakota | vs US | Rank in South Dakota |
|---|---|---|---|---|---|---|
| Chlamydia | 1084.141 cases | 531.6 | 490.7 | 103.9% above | 120.9% above | 10th of 64 |
| Gonorrhea | 555.321 cases | 253.3 | 178.2 | 119.2% above | 211.6% above | 9th of 64 |
| Syphilis (P&S) | 608.123 cases | 73.4 | 15.8 | 728.5% above | 3748.7% above | 4th of 64 |
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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