STD Rates in Calhoun County, Michigan

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

Data Year: 2023 Source: CDC STI Surveillance Population: 133,365
Combined
854.8
per 100K
4th / 83
Chlamydia
630.6
per 100K • 841 cases
US rate: 490.7
4th of 83 in Michigan
Higher than 87% of US counties
Gonorrhea
215.2
per 100K • 287 cases
US rate: 178.2
7th of 83 in Michigan
Higher than 86% of US counties
Syphilis P&S
9
per 100K • 12 cases
Based on 12 cases — interpret with care
US rate: 15.8

Calhoun County has one of the higher STD burdens in Michigan, with a combined rate of 854.8 per 100,000 residents in 2023 — ranking 4th of 83 counties. Reported infections included chlamydia at 630.6 per 100,000 (841 cases, 47% above the state rate), gonorrhea at 215.2 per 100,000 (287 cases, 41% above the state rate), syphilis at 9.0 per 100,000 (12 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 Calhoun County.

STD Trends in Calhoun County, 2000–2023

Reported cases per 100,000 residents each year, against the Michigan 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
630.6
per 100K in 2023
322.4 in 2000
Peak 784.0 in 2018
Gonorrhea
215.2
per 100K in 2023
258.6 in 2000
Peak 397.6 in 2021
Syphilis (P&S)
9.0
per 100K in 2023
0.0 in 2000
Peak 9.8 in 2022

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

Know your status — get tested today

Same-day testing at 4,500+ locations. No appointment needed. Results in 1–3 days.

Calhoun County vs Michigan and the US

Infection Calhoun County Michigan US vs Michigan vs US Rank in Michigan
Chlamydia 630.6841 cases 429.5 490.7 46.8% above 28.5% above 4th of 83
Gonorrhea 215.2287 cases 152.2 178.2 41.4% above 20.8% above 7th of 83
Syphilis (P&S) 912 cases 8.4 15.8 Too few cases Too few cases

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

Find a clinic near you

4,500+ testing locations nationwide. 100% confidential. Most insurance accepted.

FAQs

Calhoun County ranks 4th of 83 Michigan counties for combined STD rate in 2023, at 854.8 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Calhoun County, with 841 cases at a rate of 630.6 per 100,000 residents.
STDTest.com lists confidential testing locations across Calhoun County and Michigan. 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.