STD Rates in Dallas County, Iowa
2023 CDC surveillance data for Dallas County, Iowa — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Dallas County reported a combined STD rate of 372.7 per 100,000 residents in 2023, placing it 27th of 99 Iowa counties — in the upper half of the state. Reported infections included chlamydia at 305.2 per 100,000 (339 cases, 28% below the state rate), gonorrhea at 63.0 per 100,000 (70 cases, 46% below the state rate), syphilis at 4.5 per 100,000 (5 cases, too few for a reliable comparison). Confidential STD testing is available throughout Dallas County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Dallas County, 2000–2023
Reported cases per 100,000 residents each year, against the Iowa 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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Dallas County vs Iowa and the US
| Infection | Dallas County | Iowa | US | vs Iowa | vs US | Rank in Iowa |
|---|---|---|---|---|---|---|
| Chlamydia | 305.2339 cases | 426.8 | 490.7 | 28.5% below | 37.8% below | 28th of 99 |
| Gonorrhea | 6370 cases | 116.8 | 178.2 | 46.1% below | 64.6% below | 31st of 99 |
| Syphilis (P&S) | 4.55 cases | 10.3 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Iowa’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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