STD Rates in Maricopa County, Arizona

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

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Data Year: 2023 Source: CDC STI Surveillance Population: 4,585,880
Combined
870.2
per 100K
3rd / 15
Chlamydia
611.9
per 100K • 28,061 cases
Gonorrhea
232
per 100K • 10,641 cases
Syphilis P&S
26.3
per 100K • 1,204 cases

Maricopa County has one of the higher STD burdens in Arizona, with a combined rate of 870.2 per 100,000 residents in 2023 — ranking 3rd of 15 counties. Reported infections included chlamydia at 611.9 per 100,000 (28,061 cases, 11% above the state rate), gonorrhea at 232.0 per 100,000 (10,641 cases, 22% above the state rate), syphilis at 26.3 per 100,000 (1,204 cases, 9% above the state rate). Confidential STD testing is available throughout Maricopa County — knowing your status is the only way to catch infections that often show no symptoms.

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Maricopa County vs Arizona Average

Infection Maricopa County Arizona Rate Difference
Chlamydia 611.9 552.5 11% above
Gonorrhea 232 190.7 22% above
Syphilis (P&S) 26.3 24.1 9% above

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Largest cities in Maricopa County, Arizona

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

STD testing in Phoenix, AZ1,642,323 people → STD testing in Mesa, AZ511,764 people → STD testing in Gilbert, AZ280,262 people → STD testing in Chandler, AZ280,136 people → STD testing in Glendale, AZ252,833 people → STD testing in Scottsdale, AZ243,821 people → STD testing in Peoria, AZ196,906 people → STD testing in Tempe, AZ188,065 people → STD testing in Surprise, AZ154,948 people → STD testing in Goodyear, AZ107,645 people →
Show all 25 cities ↓Show fewer cities ↑
STD testing in Buckeye, AZ104,923 people → STD testing in Avondale, AZ92,477 people → STD testing in Queen Creek, AZ71,867 people → STD testing in Sun City, AZ37,486 people → STD testing in El Mirage, AZ36,088 people → STD testing in Sun City West, AZ27,425 people → STD testing in Fountain Hills, AZ23,789 people → STD testing in Anthem, AZ22,584 people → STD testing in New River, AZ18,240 people → STD testing in Sun Lakes, AZ13,924 people → STD testing in Paradise Valley, AZ12,611 people → STD testing in Wickenburg, AZ8,059 people → STD testing in Guadalupe, AZ5,272 people → STD testing in Gila Bend, AZ1,363 people → STD testing in Deer Valley, AZ →

Largest Counties in Arizona

Pima County → Pinal County → Yavapai County → Mohave County → Yuma County → Coconino County → Cochise County → Navajo County → Apache County → Gila County →

All 15 Arizona counties → STD testing in Arizona →

FAQs

Maricopa County ranks 3rd of 15 Arizona counties for combined STD rate in 2023, at 870.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Maricopa County, with 28,061 cases at a rate of 611.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Maricopa County and Arizona. 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