STD Rates in Gallatin County, Montana
2023 CDC surveillance data for Gallatin County, Montana — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Gallatin County has one of the higher STD burdens in Montana, with a combined rate of 457.3 per 100,000 residents in 2023 — ranking 8th of 51 counties. Reported infections included chlamydia at 409.8 per 100,000 (518 cases, 27% above the state rate), gonorrhea at 44.3 per 100,000 (56 cases, 35% below the state rate), syphilis at 3.2 per 100,000 (4 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Gallatin County has confidential testing locations available.
STD Trends in Gallatin 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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Gallatin County vs Montana and the US
| Infection | Gallatin County | Montana | US | vs Montana | vs US | Rank in Montana |
|---|---|---|---|---|---|---|
| Chlamydia | 409.8518 cases | 322.6 | 490.7 | 27% above | 16.5% below | 6th of 51 |
| Gonorrhea | 44.356 cases | 67.7 | 178.2 | 34.6% below | 75.1% below | 15th of 51 |
| Syphilis (P&S) | 3.24 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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