Understanding Area codes. The United States of America is divided into regions, known as area codes that correspond with telephone dialing areas. Based on population, some states have only one area code, whereas others may have multiple area codes. The need for more telephone numbers increased and led to the need for additional area codes. Area Codes Search Notes. Fixed phone numbers in Egypt, Cairo/Giza/Qalyubia are comprised of a single country code (+20), a 1 digit area code, and a 70-80 digit line code. . Making a call with the wrong country, area, or region code can be co

Zip Code Atlas, Area Code, City & State Profiles Zip Atlas is a structured collection of zip code, area code, city and state demographic, social and economic profiles. Each of the reports is accompanied by a detailed boundary map, allowing for visual representation of statistical data.