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STD Testing in Mason City, Iowa

4 STD and HIV testing locations in Mason City, including 2 that list free testing.

Verify with the clinic before visiting. Hours, services, fees and appointment rules change. Call ahead to confirm. This directory is for information only and is not medical advice. In an emergency, call 911.

Cerro Gordo County Department of Public Health

2570 4th St SW, Ste 1, Mason City, IA 50401 · (641) 421-9300
Free testing listedChlamydiaGonorrheaSyphilisHerpesHIVRapid HIVHepatitis CHepatitis B
Mon 8:00am – 4:30pm; Tue 8:00am – 4:30pm; Wed 8:00am – 4:30pm; Thu 8:00am – 4:30pm; Fri 8:00am – 4:30pm

North Iowa Community Action Organization – Family Planning, WIC, and Maternal/Child Health

100 1st St NW, Ste 200, Mason City, IA 50401 · (800) 657-5856
Free testing listedSliding scaleChlamydiaGonorrheaSyphilisHerpesHIVHepatitis CHepatitis B
Mon 7:30am – 4:30pm; Tue 7:30am – 4:30pm; Wed 7:30am – 4:30pm; Thu 7:30am – 4:30pm; Fri 7:30am – 4:30pm

Community Health Center of Fort Dodge – Mason City Health Center

404 N Federal Ave, Mason City, IA 50401 · (641) 450-0601
Sliding scaleChlamydiaGonorrheaSyphilisHerpesHIVRapid HIVHepatitis CHepatitis B
Mon 8:00am – 5:00pm; Tue 8:00am – 5:00pm; Wed 8:00am – 5:00pm; Thu 8:00am – 5:00pm; Fri 8:00am – 5:00pm

MercyOne – MercyOne North Iowa Infectious Disease Care

1000 4th St SW, Mason City, IA 50401 · (641) 428-8001
ChlamydiaGonorrheaSyphilisHerpesHIVHepatitis CHepatitis B
Mon 8:00am – 5:00pm; Tue 8:00am – 5:00pm; Wed 8:00am – 5:00pm; Thu 8:00am – 5:00pm; Fri 8:00am – 5:00pm; Sat 8:00am – 5:00pm; Sun 8:00am – 5:00pm

Frequently asked questions

Where can I get STD testing in Mason City, IA?

This page lists 4 STD/HIV testing locations in Mason City, IA from the CDC NPIN directory. Call ahead to confirm services and hours.

Is there free STD testing in Mason City, IA?

2 of the 4 listed locations say they offer free STI and/or HIV testing. Eligibility can depend on age, income or residency. Many health departments and community health centers also use sliding-scale fees.

Do I need an appointment?

Appointment rules vary by location. Call before you go.

Can I get a rapid HIV test?

2 locations here list rapid HIV testing, which usually gives results during the same visit.

Which tests should I ask for?

Common tests include chlamydia, gonorrhea, syphilis, HIV and sometimes herpes or hepatitis. Which ones you need depends on your situation, so a clinician can help you decide. CDC recommends everyone ages 13 to 64 get tested for HIV at least once.

Is STD testing confidential?

Health care providers must keep your health information private. Some public health clinics offer anonymous HIV testing. Ask the clinic about their privacy policy.

Data: CDC NPIN. Page built 2026-11-03.