STD Rates in Cassia County, Idaho

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

Data Year: 2023 Source: CDC STI Surveillance Population: 25,696
Combined
544.8
per 100K
1st / 43
Chlamydia
513.7
per 100K • 132 cases
US rate: 490.7
1st of 43 in Idaho
Higher than 79% of US counties
Gonorrhea
31.1
per 100K • 8 cases
Based on 8 cases — interpret with care
US rate: 178.2
Syphilis P&S
0.0
No cases reported

Cassia County has one of the higher STD burdens in Idaho, with a combined rate of 544.8 per 100,000 residents in 2023 — ranking 1st of 43 counties. Reported infections included chlamydia at 513.7 per 100,000 (132 cases, 74% above the state rate), gonorrhea at 31.1 per 100,000 (8 cases, too few for a reliable comparison). No syphilis cases were reported in Cassia County in 2023. Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Cassia County.

STD Trends in Cassia County, 2000–2023

Reported cases per 100,000 residents each year, against the Idaho 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
513.7
per 100K in 2023
112.3 in 2000
Peak 513.7 in 2023
Gonorrhea
31.1
per 100K in 2023
9.4 in 2000
Peak 62.4 in 2019
Syphilis (P&S)
0.0
per 100K in 2023
0.0 in 2000
Peak 4.3 in 2013

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

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Cassia County vs Idaho and the US

Infection Cassia County Idaho US vs Idaho vs US Rank in Idaho
Chlamydia 513.7132 cases 294.9 490.7 74.2% above 4.7% above 1st of 43
Gonorrhea 31.18 cases 39.6 178.2 Too few cases Too few cases
Syphilis (P&S) 00 cases 3.8 15.8 Too few cases Too few cases

Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Idaho’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

Cassia County ranks 1st of 43 Idaho counties for combined STD rate in 2023, at 544.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Cassia County, with 132 cases at a rate of 513.7 per 100,000 residents.
STDTest.com lists confidential testing locations across Cassia County and Idaho. 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.