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Franklin-Williamson Bi-County Health Department – Williamson County Office
STD/STI testing location in Marion, Illinois.
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.
Address: 8160 Express Dr, Marion, IL 62959
Get directions
Phone: (618) 993-8111
Website: https://bicountyhealth.org/
Tests listed
- Chlamydia Test
- Conventional HIV Test
- Gonorrhea Test
- Hepatitis C Test
- Rapid HIV Test
- Syphilis Test
- TB Test
Cost and payment
Free Mpox Vaccine, Medicaid Accepted, Medicare Accepted, Fee, Insurance Accepted, Free STI Test, Free HIV Test.
This location lists free STI and/or HIV testing. Eligibility rules may apply.
Hours
| Monday | 8:00am – 4:00pm |
| Tuesday | 8:00am – 4:00pm |
| Wednesday | 8:00am – 4:00pm |
| Thursday | 8:00am – 4:00pm |
| Friday | 8:00am – 4:00pm |
Appointment required: No (walk-ins may be accepted)
Other services
STI treatment.
Languages: English, Spanish
Type: Public Health Department/Social Services Department
Source: CDC NPIN listing. Last updated by source: 2026-08-24. Page built 2026-11-03.