STD Rates in Fresno County, California
2023 CDC surveillance data for Fresno County, California — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Fresno County has one of the higher STD burdens in California, with a combined rate of 929.1 per 100,000 residents in 2023 — ranking 2nd of 58 counties. Reported infections included chlamydia at 701.6 per 100,000 (7,136 cases, 43% above the state rate), gonorrhea at 203.4 per 100,000 (2,069 cases, 7% above the state rate), syphilis at 24.1 per 100,000 (245 cases, 48% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Fresno County has confidential testing locations available.
STD Trends in Fresno County, 2000–2023
Reported cases per 100,000 residents each year, against the California 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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Fresno County vs California and the US
| Infection | Fresno County | California | US | vs California | vs US | Rank in California |
|---|---|---|---|---|---|---|
| Chlamydia | 701.67,136 cases | 491.1 | 490.7 | 42.9% above | 43% above | 1st of 58 |
| Gonorrhea | 203.42,069 cases | 190.2 | 178.2 | 6.9% above | 14.1% above | 3rd of 58 |
| Syphilis (P&S) | 24.1245 cases | 16.3 | 15.8 | 47.9% above | 52.5% above | 9th of 58 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among California’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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