STD Rates in Johnson County, Wyoming

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

Data Year: 2023 Source: CDC STI Surveillance Population: 8,761
Combined
171.2
per 100K
15th / 22
Chlamydia
159.8
per 100K • 14 cases
Based on 14 cases — interpret with care
US rate: 490.7
Gonorrhea
11.4
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 178.2
Syphilis P&S
0.0
No cases reported

Johnson County recorded a combined STD rate of 171.2 per 100,000 residents in 2023, ranking 15th of 22 counties in Wyoming. Reported infections included chlamydia at 159.8 per 100,000 (14 cases, too few for a reliable comparison), gonorrhea at 11.4 per 100,000 (1 case, too few for a reliable comparison). No syphilis cases were reported in Johnson County in 2023. Confidential STD testing is available throughout Johnson County — knowing your status is the only way to catch infections that often show no symptoms.

STD Trends in Johnson 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
159.8
per 100K in 2023
14.1 in 2000
Peak 255.1 in 2021
Gonorrhea
11.4
per 100K in 2023
14.1 in 2000
Peak 47.4 in 2019
Syphilis (P&S)
0.0
per 100K in 2023
0.0 in 2000
Peak 0.0 in 2000

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

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Johnson County vs Wyoming and the US

Infection Johnson County Wyoming US vs Wyoming vs US Rank in Wyoming
Chlamydia 159.814 cases 313.2 490.7 Too few cases Too few cases –
Gonorrhea 11.41 case 42.3 178.2 Too few cases Too few cases –
Syphilis (P&S) 00 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

Johnson County ranks 15th of 22 Wyoming counties for combined STD rate in 2023, at 171.2 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Johnson County, with 14 cases at a rate of 159.8 per 100,000 residents.
STDTest.com lists confidential testing locations across Johnson 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.