STD Rates in Mcdonough County, Illinois

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

Data Year: 2023 Source: CDC STI Surveillance Population: 26,838
Combined
711.7
per 100K
15th / 102
Chlamydia
529.1
per 100K • 142 cases
US rate: 490.7
15th of 102 in Illinois
Higher than 80% of US counties
Gonorrhea
175.1
per 100K • 47 cases
US rate: 178.2
15th of 102 in Illinois
Higher than 81% of US counties
Syphilis P&S
7.5
per 100K • 2 cases
Based on 2 cases — interpret with care
US rate: 15.8

Mcdonough County has one of the higher STD burdens in Illinois, with a combined rate of 711.7 per 100,000 residents in 2023 — ranking 15th of 102 counties. Reported infections included chlamydia at 529.1 per 100,000 (142 cases, 5% below the state rate), gonorrhea at 175.1 per 100,000 (47 cases, 13% below the state rate), syphilis at 7.5 per 100,000 (2 cases, too few for a reliable comparison). Confidential STD testing is available throughout Mcdonough County — knowing your status is the only way to catch infections that often show no symptoms.

STD Trends in Mcdonough County, 2000–2023

Reported cases per 100,000 residents each year, against the Illinois 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
529.1
per 100K in 2023
195.2 in 2000
Peak 991.0 in 2017
Gonorrhea
175.1
per 100K in 2023
33.5 in 2000
Peak 234.8 in 2021
Syphilis (P&S)
7.5
per 100K in 2023
0.0 in 2000
Peak 14.9 in 2022

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

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Mcdonough County vs Illinois and the US

Infection Mcdonough County Illinois US vs Illinois vs US Rank in Illinois
Chlamydia 529.1142 cases 557.7 490.7 5.1% below 7.8% above 15th of 102
Gonorrhea 175.147 cases 202.3 178.2 13.4% below 1.7% below 15th of 102
Syphilis (P&S) 7.52 cases 11.6 15.8 Too few cases Too few cases –

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

Mcdonough County ranks 15th of 102 Illinois counties for combined STD rate in 2023, at 711.7 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Mcdonough County, with 142 cases at a rate of 529.1 per 100,000 residents.
STDTest.com lists confidential testing locations across Mcdonough County and Illinois. 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.