Herndon, VA utilizes an area code overlay in which area codes 703 and 571 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Herndon, VA area code information read more about area codes 703 and 571 details and Virginia area codes.
Herndon, VA is located in Fairfax County and observes the Eastern Time Zone. View our Times by Area Code tool.