An area code is a three digit number that comes before a telephone number to identify regions in the US and Canada, and other countries. If you are unfamiliar with a number that is calling you an area code can help you to locate where the person is calling from. There are websites on this area code list that help you to locate numbers and where they are calling from. All you have to do is type in the number and it will tell you who is calling or where they are calling from. There are also websites on this list to help you figure out the correct area code for the phone number that you want to call, if you type in the city or state of the person that you are going to call. This list also has a directory to make it easier to look up the phone numbers of people, businesses, and more.