STD Rates in Pennington County, South Dakota
2023 CDC surveillance data for Pennington County, South Dakota — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Pennington County has one of the higher STD burdens in South Dakota, with a combined rate of 1,228.6 per 100,000 residents in 2023 — ranking 11th of 64 counties. Reported infections included chlamydia at 672.1 per 100,000 (779 cases, 26% above the state rate), gonorrhea at 429.7 per 100,000 (498 cases, 70% above the state rate), syphilis at 126.8 per 100,000 (147 cases, 73% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Pennington County has confidential testing locations available.
STD Trends in Pennington 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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Pennington County vs South Dakota and the US
| Infection | Pennington County | South Dakota | US | vs South Dakota | vs US | Rank in South Dakota |
|---|---|---|---|---|---|---|
| Chlamydia | 672.1779 cases | 531.6 | 490.7 | 26.4% above | 37% above | 13th of 64 |
| Gonorrhea | 429.7498 cases | 253.3 | 178.2 | 69.6% above | 141.1% above | 10th of 64 |
| Syphilis (P&S) | 126.8147 cases | 73.4 | 15.8 | 72.8% above | 702.5% above | 12th 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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