STD Rates in Imperial County, California

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

Data Year: 2023 Source: CDC STI Surveillance Population: 179,047
Combined
513.2
per 100K
22nd / 58
Chlamydia
442.9
per 100K • 793 cases
US rate: 490.7
18th of 58 in California
Higher than 73% of US counties
Gonorrhea
65.3
per 100K • 117 cases
US rate: 178.2
42nd of 58 in California
Higher than 50% of US counties
Syphilis P&S
5
per 100K • 9 cases
Based on 9 cases — interpret with care
US rate: 15.8

Imperial County reported a combined STD rate of 513.2 per 100,000 residents in 2023, placing it 22nd of 58 California counties — in the upper half of the state. Reported infections included chlamydia at 442.9 per 100,000 (793 cases, 10% below the state rate), gonorrhea at 65.3 per 100,000 (117 cases, 66% below the state rate), syphilis at 5.0 per 100,000 (9 cases, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Imperial County.

STD Trends in Imperial 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.

Chlamydia
442.9
per 100K in 2023
0.0 in 2000
Peak 603.2 in 2019
Gonorrhea
65.3
per 100K in 2023
0.0 in 2000
Peak 137.3 in 2021
Syphilis (P&S)
5.0
per 100K in 2023
0.0 in 2000
Peak 12.1 in 2017

Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.

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Imperial County vs California and the US

Infection Imperial County California US vs California vs US Rank in California
Chlamydia 442.9793 cases 491.1 490.7 9.8% below 9.7% below 18th of 58
Gonorrhea 65.3117 cases 190.2 178.2 65.7% below 63.4% below 42nd of 58
Syphilis (P&S) 59 cases 16.3 15.8 Too few cases Too few cases –

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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FAQs

Imperial County ranks 22nd of 58 California counties for combined STD rate in 2023, at 513.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Imperial County, with 793 cases at a rate of 442.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Imperial County and California. Many offer same-day appointments with results in 1–3 days.
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.