STD Rates in Multnomah County, Oregon
2023 CDC surveillance data for Multnomah County, Oregon — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Multnomah County has one of the higher STD burdens in Oregon, with a combined rate of 932.1 per 100,000 residents in 2023 — ranking 1st of 36 counties. Reported infections included chlamydia at 598.6 per 100,000 (4,727 cases, 65% above the state rate), gonorrhea at 302.5 per 100,000 (2,389 cases, 158% above the state rate), syphilis at 31.0 per 100,000 (245 cases, 61% 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 Multnomah County.
STD Trends in Multnomah 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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Multnomah County vs Oregon and the US
| Infection | Multnomah County | Oregon | US | vs Oregon | vs US | Rank in Oregon |
|---|---|---|---|---|---|---|
| Chlamydia | 598.64,727 cases | 362.5 | 490.7 | 65.1% above | 22% above | 1st of 36 |
| Gonorrhea | 302.52,389 cases | 117.2 | 178.2 | 158.1% above | 69.8% above | 1st of 36 |
| Syphilis (P&S) | 31245 cases | 19.2 | 15.8 | 61.5% above | 96.2% above | 2nd 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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