STD Rates in Allendale County, South Carolina
2023 CDC surveillance data for Allendale County, South Carolina — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Allendale County has one of the higher STD burdens in South Carolina, with a combined rate of 1,872.7 per 100,000 residents in 2023 — ranking 2nd of 46 counties. Reported infections included chlamydia at 1424.9 per 100,000 (105 cases, 133% above the state rate), gonorrhea at 420.7 per 100,000 (31 cases, 89% above the state rate), syphilis at 27.1 per 100,000 (2 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Allendale County has confidential testing locations available.
STD Trends in Allendale County, 2000–2023
Reported cases per 100,000 residents each year, against the South Carolina 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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Allendale County vs South Carolina and the US
| Infection | Allendale County | South Carolina | US | vs South Carolina | vs US | Rank in South Carolina |
|---|---|---|---|---|---|---|
| Chlamydia | 1424.9105 cases | 612.1 | 490.7 | 132.8% above | 190.4% above | 1st of 46 |
| Gonorrhea | 420.731 cases | 222.4 | 178.2 | 89.2% above | 136.1% above | 5th of 46 |
| Syphilis (P&S) | 27.12 cases | 17.3 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among South Carolina’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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