STD Rates in Washtenaw County, Michigan

2023 CDC surveillance data for Washtenaw County, Michigan — chlamydia, gonorrhea, and syphilis rates with state comparisons.

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Data Year: 2023 Source: CDC STI Surveillance Population: 365,521
Combined
459.6
per 100K
12th / 83
Chlamydia
352.1
per 100K • 1,287 cases
Gonorrhea
100.9
per 100K • 369 cases
Syphilis P&S
6.6
per 100K • 24 cases

Washtenaw County has one of the higher STD burdens in Michigan, with a combined rate of 459.6 per 100,000 residents in 2023 — ranking 12th of 83 counties. Reported infections included chlamydia at 352.1 per 100,000 (1,287 cases, 18% below the state rate), gonorrhea at 100.9 per 100,000 (369 cases, 34% below the state rate), syphilis at 6.6 per 100,000 (24 cases, 21% below the state rate). Confidential STD testing is available throughout Washtenaw County — knowing your status is the only way to catch infections that often show no symptoms.

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Washtenaw County vs Michigan Average

Infection Washtenaw County Michigan Rate Difference
Chlamydia 352.1 429.5 18% below
Gonorrhea 100.9 152.2 34% below
Syphilis (P&S) 6.6 8.4 21% below

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Largest cities in Washtenaw County, Michigan

Largest first, by Census population. Each city page lists nearby clinics, free and low-cost testing, and labs.

STD testing in Ann Arbor, MI122,036 people → STD testing in Ypsilanti, MI19,857 people → STD testing in Saline, MI9,006 people →

Largest Counties in Michigan

Wayne County → Oakland County → Macomb County → Kent County → Genesee County → Ottawa County → Ingham County → Kalamazoo County → Livingston County → Saginaw County →

All 83 Michigan counties → STD testing in Michigan →

FAQs

Washtenaw County ranks 12th of 83 Michigan counties for combined STD rate in 2023, at 459.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Washtenaw County, with 1,287 cases at a rate of 352.1 per 100,000 residents.
STDTest.com lists confidential testing locations across Washtenaw County and Michigan. Many offer same-day appointments with results in 1–3 days.

Related Resources

STD Testing Window Periods How Soon After Sex to Test STD Symptoms Guide Testing Timeline Chart All Testing Clinics STD Statistics and Data
Data sourced from the CDC's annual STI Surveillance Report. Rates are per 100,000 population and reflect reported cases only — actual prevalence is likely higher due to undiagnosed infections. While we strive for accuracy, STDTest.com makes no representations or warranties regarding the completeness or accuracy of this data and is not responsible for any errors or omissions. This page is for informational purposes only and does not constitute medical advice.
Sources