Saint Charles, Maryland Area Code
Saint Charles, MD is officially utilizing an area code overlay in which area codes 240 and 301 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Saint Charles, MD area code information read more about area codes 240 and 301 details and Maryland area codes.
Saint Charles, MD is located in Charles County and observes the Eastern Time Zone. View our Times by Area Code tool.