STD Rates in Maricopa County, Arizona
2023 CDC surveillance data for Maricopa County, Arizona — chlamydia, gonorrhea, and syphilis rates with state comparisons.
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.
STD Trends in Maricopa County, 2000–2023
Reported cases per 100,000 residents each year, against the Arizona 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.
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Maricopa County vs Arizona and the US
| Infection | Maricopa County | Arizona | US | vs Arizona | vs US | Rank in Arizona |
|---|---|---|---|---|---|---|
| Chlamydia | 611.928,061 cases | 552.5 | 490.7 | 10.8% above | 24.7% above | 3rd of 15 |
| Gonorrhea | 23210,641 cases | 190.7 | 178.2 | 21.7% above | 30.2% above | 3rd of 15 |
| Syphilis (P&S) | 26.31,204 cases | 24.1 | 15.8 | 9.1% above | 66.5% above | 6th of 15 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Arizona’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.
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