STD Rates in Loudoun County, Virginia

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 436,258
Combined
253.1
per 100K
101st / 133
Chlamydia
206.3
per 100K • 900 cases
Gonorrhea
43.8
per 100K • 191 cases
Syphilis P&S
3
per 100K • 13 cases

Loudoun County is among the lower-burden counties in Virginia, reporting a combined STD rate of 253.1 per 100,000 residents in 2023 — 101st of 133 counties. Reported infections included chlamydia at 206.3 per 100,000 (900 cases, 56% below the state rate), gonorrhea at 43.8 per 100,000 (191 cases, 72% below the state rate), syphilis at 3.0 per 100,000 (13 cases, 72% below the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Loudoun County has confidential testing locations available.

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Loudoun County vs Virginia Average

Infection Loudoun County Virginia Rate Difference
Chlamydia 206.3 472.8 56% below
Gonorrhea 43.8 158.3 72% below
Syphilis (P&S) 3 10.7 72% below

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Largest cities in Loudoun County, Virginia

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

STD testing in Leesburg, VA49,171 people → STD testing in South Riding, VA34,352 people → STD testing in Sterling, VA32,411 people → STD testing in Sugarland Run, VA12,629 people → STD testing in Lansdowne, VA12,328 people → STD testing in Lowes Island, VA11,018 people →

Largest Counties in Virginia

Fairfax County → Prince William County → Virginia Beach City → Chesterfield County → Henrico County → Chesapeake City → Arlington County → Norfolk City → Richmond City → Newport News City →

All 133 Virginia counties → STD testing in Virginia →

FAQs

Loudoun County ranks 101st of 133 Virginia counties for combined STD rate in 2023, at 253.1 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Loudoun County, with 900 cases at a rate of 206.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Loudoun County and Virginia. 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