STD Rates in Douglas County, Colorado

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 383,833
Combined
230.9
per 100K
42nd / 61
Chlamydia
186.8
per 100K • 717 cases
Gonorrhea
39.9
per 100K • 153 cases
Syphilis P&S
4.2
per 100K • 16 cases

Douglas County recorded a combined STD rate of 230.9 per 100,000 residents in 2023, ranking 42nd of 61 counties in Colorado. Reported infections included chlamydia at 186.8 per 100,000 (717 cases, 57% below the state rate), gonorrhea at 39.9 per 100,000 (153 cases, 69% below the state rate), syphilis at 4.2 per 100,000 (16 cases, 74% below the state rate). Confidential STD testing is available throughout Douglas County — knowing your status is the only way to catch infections that often show no symptoms.

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Douglas County vs Colorado Average

Infection Douglas County Colorado Rate Difference
Chlamydia 186.8 435.1 57% below
Gonorrhea 39.9 128.7 69% below
Syphilis (P&S) 4.2 16 74% below

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Largest cities in Douglas County, Colorado

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

STD testing in Highlands Ranch, CO102,257 people → STD testing in Castle Rock, CO79,123 people → STD testing in Parker, CO61,783 people → STD testing in Lone Tree, CO14,147 people → STD testing in Castle Pines, CO13,388 people → STD testing in The Pinery, CO11,871 people → STD testing in Roxborough Park, CO9,085 people → STD testing in Stonegate, CO8,906 people → STD testing in Castle Pines North, CO →

Largest Counties in Colorado

El Paso County → Denver County → Arapahoe County → Jefferson County → Adams County → Larimer County → Weld County → Boulder County → Pueblo County → Mesa County →

All 61 Colorado counties → STD testing in Colorado →

FAQs

Douglas County ranks 42nd of 61 Colorado counties for combined STD rate in 2023, at 230.9 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Douglas County, with 717 cases at a rate of 186.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Douglas County and Colorado. Many offer same-day appointments with results in 1–3 days.

Related Resources

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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