STD Rates in Montgomery County, Maryland
2023 CDC surveillance data for Montgomery County, Maryland — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Montgomery County reported a combined STD rate of 500.6 per 100,000 residents in 2023, placing it 9th of 24 Maryland counties — in the upper half of the state. Reported infections included chlamydia at 384.3 per 100,000 (4,068 cases, 34% below the state rate), gonorrhea at 110.2 per 100,000 (1,166 cases, 47% below the state rate), syphilis at 6.1 per 100,000 (65 cases, 57% below the state rate). Confidential STD testing is available throughout Montgomery County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Montgomery County, 2000–2023
Reported cases per 100,000 residents each year, against the Maryland 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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Montgomery County vs Maryland and the US
| Infection | Montgomery County | Maryland | US | vs Maryland | vs US | Rank in Maryland |
|---|---|---|---|---|---|---|
| Chlamydia | 384.34,068 cases | 579.8 | 490.7 | 33.7% below | 21.7% below | 8th of 24 |
| Gonorrhea | 110.21,166 cases | 207.1 | 178.2 | 46.8% below | 38.2% below | 10th of 24 |
| Syphilis (P&S) | 6.165 cases | 14.2 | 15.8 | 57% below | 61.4% below | 13th of 24 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Maryland’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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