STD Rates in Mills County, Iowa

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

Data Year: 2023 Source: CDC STI Surveillance Population: 14,637
Combined
198.1
per 100K
77th / 99
Chlamydia
150.3
per 100K • 22 cases
US rate: 490.7
85th of 99 in Iowa
Higher than 15% of US counties
Gonorrhea
41
per 100K • 6 cases
Based on 6 cases — interpret with care
US rate: 178.2
Syphilis P&S
6.8
per 100K • 1 cases
Based on 1 case — interpret with care
US rate: 15.8

Mills County is among the lower-burden counties in Iowa, reporting a combined STD rate of 198.1 per 100,000 residents in 2023 — 77th of 99 counties. Reported infections included chlamydia at 150.3 per 100,000 (22 cases, 65% below the state rate), gonorrhea at 41.0 per 100,000 (6 cases, too few for a reliable comparison), syphilis at 6.8 per 100,000 (1 case, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Mills County has confidential testing locations available.

STD Trends in Mills County, 2000–2023

Reported cases per 100,000 residents each year, against the Iowa 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
150.3
per 100K in 2023
61.8 in 2000
Peak 302.3 in 2022
Gonorrhea
41.0
per 100K in 2023
20.6 in 2000
Peak 92.7 in 2019
Syphilis (P&S)
6.8
per 100K in 2023
0.0 in 2000
Peak 20.6 in 2022

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

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Mills County vs Iowa and the US

Infection Mills County Iowa US vs Iowa vs US Rank in Iowa
Chlamydia 150.322 cases 426.8 490.7 64.8% below 69.4% below 85th of 99
Gonorrhea 416 cases 116.8 178.2 Too few cases Too few cases –
Syphilis (P&S) 6.81 case 10.3 15.8 Too few cases Too few cases –

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

Mills County ranks 77th of 99 Iowa counties for combined STD rate in 2023, at 198.1 per 100,000 residents.
In 2023, chlamydia was the most frequently reported STD in Mills County, with 22 cases at a rate of 150.3 per 100,000 residents.
STDTest.com lists confidential testing locations across Mills County and Iowa. 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.