STD Rates in Franklin County, Idaho

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

Data Year: 2023 Source: CDC STI Surveillance Population: 15,498
Combined
154.9
per 100K
33rd / 43
Chlamydia
122.6
per 100K • 19 cases
Based on 19 cases — interpret with care
US rate: 490.7
Gonorrhea
25.8
per 100K • 4 cases
Based on 4 cases — interpret with care
US rate: 178.2
Syphilis P&S
6.5
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Franklin County is among the lower-burden counties in Idaho, reporting a combined STD rate of 154.9 per 100,000 residents in 2023 — 33rd of 43 counties. Reported infections included chlamydia at 122.6 per 100,000 (19 cases, too few for a reliable comparison), gonorrhea at 25.8 per 100,000 (4 cases, too few for a reliable comparison), syphilis at 6.5 per 100,000 (1 case, too few for a reliable comparison). Confidential STD testing is available throughout Franklin County — knowing your status is the only way to catch infections that often show no symptoms.

STD Trends in Franklin 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
122.6
per 100K in 2023
44.2 in 2000
Peak 151.3 in 2019
Gonorrhea
25.8
per 100K in 2023
8.8 in 2000
Peak 27.3 in 2021
Syphilis (P&S)
6.5
per 100K in 2023
0.0 in 2000
Peak 7.4 in 2017

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

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Franklin County vs Idaho and the US

Infection Franklin County Idaho US vs Idaho vs US Rank in Idaho
Chlamydia 122.619 cases 294.9 490.7 Too few cases Too few cases –
Gonorrhea 25.84 cases 39.6 178.2 Too few cases Too few cases –
Syphilis (P&S) 6.51 case 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

Franklin County ranks 33rd of 43 Idaho counties for combined STD rate in 2023, at 154.9 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Franklin County, with 19 cases at a rate of 122.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Franklin 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.