Zip Code 22203 Time Zone. 22203 is located in the state of Virginia in the Washington D.C. metro area. Zip code 22203 is primarily located in Arlington County. The official postal service name used for 22203 is ARLINGTON, Virginia.Portions of the 22203 zip code are contained within or border the city limits of Arlington, VA, Seven Corners, VA, .Zip code 22203 is part of area code 571 and area code 703.ip Code 22203 Time Zone. 22203 is located in the state of Virginia in the Washington D.C. metro area. Zip code 22203 is primarily located in Arlington County. The official postal service name used for 22203 is ARLINGTON, Virginia.