STD Rates in Lewis And Clark County, Montana
2023 CDC surveillance data for Lewis And Clark County, Montana — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Lewis And Clark County recorded a combined STD rate of 205.4 per 100,000 residents in 2023, ranking 30th of 51 counties in Montana. Reported infections included chlamydia at 184.0 per 100,000 (138 cases, 43% below the state rate), gonorrhea at 14.7 per 100,000 (11 cases, too few for a reliable comparison), syphilis at 6.7 per 100,000 (5 cases, too few for a reliable comparison). Confidential STD testing is available throughout Lewis And Clark County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Lewis And Clark 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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Lewis And Clark County vs Montana and the US
| Infection | Lewis And Clark County | Montana | US | vs Montana | vs US | Rank in Montana |
|---|---|---|---|---|---|---|
| Chlamydia | 184138 cases | 322.6 | 490.7 | 43% below | 62.5% below | 27th of 51 |
| Gonorrhea | 14.711 cases | 67.7 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 6.75 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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