STD Rates in Baltimore County, Maryland
2023 CDC surveillance data for Baltimore County, Maryland — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Baltimore County has one of the higher STD burdens in Maryland, with a combined rate of 786.3 per 100,000 residents in 2023 — ranking 6th of 24 counties. Reported infections included chlamydia at 568.5 per 100,000 (4,802 cases, 2% below the state rate), gonorrhea at 198.4 per 100,000 (1,676 cases, 4% below the state rate), syphilis at 19.4 per 100,000 (164 cases, 37% above the state rate). Confidential STD testing is available throughout Baltimore County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in Baltimore 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.
Know your status — get tested today
Same-day testing at 4,500+ locations. No appointment needed. Results in 1–3 days.
Baltimore County vs Maryland and the US
| Infection | Baltimore County | Maryland | US | vs Maryland | vs US | Rank in Maryland |
|---|---|---|---|---|---|---|
| Chlamydia | 568.54,802 cases | 579.8 | 490.7 | 1.9% below | 15.9% above | 5th of 24 |
| Gonorrhea | 198.41,676 cases | 207.1 | 178.2 | 4.2% below | 11.3% above | 6th of 24 |
| Syphilis (P&S) | 19.4164 cases | 14.2 | 15.8 | 36.6% above | 22.8% above | 2nd 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.
Find a clinic near you
4,500+ testing locations nationwide. 100% confidential. Most insurance accepted.
