STD Rates in Fremont County, Wyoming

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

Data Year: 2023 Source: CDC STI Surveillance Population: 39,812
Combined
665.6
per 100K
1st / 22
Chlamydia
509.9
per 100K • 203 cases
US rate: 490.7
1st of 22 in Wyoming
Higher than 79% of US counties
Gonorrhea
150.7
per 100K • 60 cases
US rate: 178.2
1st of 22 in Wyoming
Higher than 77% of US counties
Syphilis P&S
5
per 100K • 2 cases
Based on 2 cases — interpret with care
US rate: 15.8

Fremont County has one of the higher STD burdens in Wyoming, with a combined rate of 665.6 per 100,000 residents in 2023 — ranking 1st of 22 counties. Reported infections included chlamydia at 509.9 per 100,000 (203 cases, 63% above the state rate), gonorrhea at 150.7 per 100,000 (60 cases, 256% above the state rate), syphilis at 5.0 per 100,000 (2 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 Fremont County.

STD Trends in Fremont County, 2000–2023

Reported cases per 100,000 residents each year, against the Wyoming 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
509.9
per 100K in 2023
301.4 in 2000
Peak 676.3 in 2015
Gonorrhea
150.7
per 100K in 2023
25.1 in 2000
Peak 236.4 in 2021
Syphilis (P&S)
5.0
per 100K in 2023
0.0 in 2000
Peak 30.3 in 2018

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

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Fremont County vs Wyoming and the US

Infection Fremont County Wyoming US vs Wyoming vs US Rank in Wyoming
Chlamydia 509.9203 cases 313.2 490.7 62.8% above 3.9% above 1st of 22
Gonorrhea 150.760 cases 42.3 178.2 256.3% above 15.4% below 1st of 22
Syphilis (P&S) 52 cases 2.2 15.8 Too few cases Too few cases –

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

Fremont County ranks 1st of 22 Wyoming counties for combined STD rate in 2023, at 665.6 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Fremont County, with 203 cases at a rate of 509.9 per 100,000 residents.
STDTest.com lists confidential testing locations across Fremont County and Wyoming. 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.