STD Rates in Flathead County, Montana
2023 CDC surveillance data for Flathead County, Montana — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Flathead County reported a combined STD rate of 239.3 per 100,000 residents in 2023, placing it 24th of 51 Montana counties — in the upper half of the state. Reported infections included chlamydia at 199.7 per 100,000 (227 cases, 38% below the state rate), gonorrhea at 36.1 per 100,000 (41 cases, 47% below the state rate), syphilis at 3.5 per 100,000 (4 cases, too few for a reliable comparison). Confidential STD testing is available throughout Flathead County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Flathead County, 2000–2023
Reported cases per 100,000 residents each year, against the Montana 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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Flathead County vs Montana and the US
| Infection | Flathead County | Montana | US | vs Montana | vs US | Rank in Montana |
|---|---|---|---|---|---|---|
| Chlamydia | 199.7227 cases | 322.6 | 490.7 | 38.1% below | 59.3% below | 23rd of 51 |
| Gonorrhea | 36.141 cases | 67.7 | 178.2 | 46.7% below | 79.7% below | 16th of 51 |
| Syphilis (P&S) | 3.54 cases | 27.5 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Montana’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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