STD Rates in Mason County, Michigan
2023 CDC surveillance data for Mason County, Michigan — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Mason County recorded a combined STD rate of 212.6 per 100,000 residents in 2023, ranking 48th of 83 counties in Michigan. Reported infections included chlamydia at 202.3 per 100,000 (59 cases, 53% below the state rate), gonorrhea at 6.9 per 100,000 (2 cases, too few for a reliable comparison), syphilis at 3.4 per 100,000 (1 case, too few for a reliable comparison). Confidential STD testing is available throughout Mason County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Mason County, 2000–2023
Reported cases per 100,000 residents each year, against the Michigan 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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Mason County vs Michigan and the US
| Infection | Mason County | Michigan | US | vs Michigan | vs US | Rank in Michigan |
|---|---|---|---|---|---|---|
| Chlamydia | 202.359 cases | 429.5 | 490.7 | 52.9% below | 58.8% below | 43rd of 83 |
| Gonorrhea | 6.92 cases | 152.2 | 178.2 | Too few cases | Too few cases | – |
| Syphilis (P&S) | 3.41 case | 8.4 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Michigan’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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