STD Rates in Marion County, Oregon
2023 CDC surveillance data for Marion County, Oregon — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Marion County has one of the higher STD burdens in Oregon, with a combined rate of 577.7 per 100,000 residents in 2023 — ranking 4th of 36 counties. Reported infections included chlamydia at 472.7 per 100,000 (1,639 cases, 30% above the state rate), gonorrhea at 79.3 per 100,000 (275 cases, 32% below the state rate), syphilis at 25.7 per 100,000 (89 cases, 34% above the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Marion County.
STD Trends in Marion County, 2000–2023
Reported cases per 100,000 residents each year, against the Oregon 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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Marion County vs Oregon and the US
| Infection | Marion County | Oregon | US | vs Oregon | vs US | Rank in Oregon |
|---|---|---|---|---|---|---|
| Chlamydia | 472.71,639 cases | 362.5 | 490.7 | 30.4% above | 3.7% below | 4th of 36 |
| Gonorrhea | 79.3275 cases | 117.2 | 178.2 | 32.3% below | 55.5% below | 8th of 36 |
| Syphilis (P&S) | 25.789 cases | 19.2 | 15.8 | 33.9% above | 62.7% above | 5th of 36 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Oregon’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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