Schedule a Vaccine Appointment Online

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COVID-19 Vaccination Clinic

All individuals 12 years and older can make an appointment at the COVID-19 vaccination clinic, located at Dulles Town Center, 21090 Dulles Town Circle in Sterling. Appointments are available on Tuesdays, Fridays, and Saturdays.

Note: Loudoun Count's vaccination site will be closed on the following dates in observance of county holidays:  Tuesday, November 2; Friday, November 26; and Saturday, November 27.

Make an Appointment

STEP 1: Schedule your appointment.

  • Schedule an appointment now. 
    • Individuals ages 12+ are eligible at this time. Individuals 12-17 must choose an appointment labeled Pfizer. 
    • COVID-19 vaccine boosters are available for eligible groups of people.
    • Use zip code 20166 when searching for the Loudoun County Health Department vaccination site located at Dulles Town Center.


  • Phone:  If you do not have access to the internet, you may call the COVID-19 Information Line at 703-737-8300 Monday - Friday from 9:00 a.m. - 5:00 p.m. to be scheduled by phone.

STEP 2:  Prepare for Your Appointment at the Loudoun County Vaccination Site

STEP 3 (Following First Dose Only): Schedule Your Second Dose

  • The Pfizer and Moderna vaccines require two doses, 21 or 28 days apart, respectively. It's important you get both doses. 
  • You do not need to re-register or wait for notification to schedule your second dose. 
  • If you scheduled your vaccine appointment over the phone, be sure to schedule your second dose appointment before you leave the vaccination site by visiting the assigned table near the exit. 
  • If you scheduled your vaccine appointment online, log back into your VAMS (Vaccine Administration Management System) account to schedule your second dose appointment.

Other Vaccination Opportunities

These entities do not coordinate their registrations with the Health Department.

  • Visit or text your zip code to GETVAX (438829) to find available vaccination appointments at pharmacies and other locations near you. 

More Vaccine Information

  1. Receive updates from Loudoun County

    Contact us with Questions

    • Email the Loudoun County Health Department 
    • Call the Health Department's COVID-19 information line:  703-737-8300
      • Monday-Friday, 9:00 a.m. to 5:00 p.m. (except County holidays)
    • Call the Virginia Department of Health’s COVID-19 hotline: 877-VAX-IN-VA (877-829-4682) 
      • Monday-Friday, 8:00 a.m. - 6:00 p.m.