Florida's county code for Miami is MIA. Also called the city code, it is assigned according to the IATA and UN/LOCODE system. The code is used for making reference to official airports and other specific locations.
Area codes, which is different from city code, are commonly used for making phone calls from within or outside the country. Metropolitan Miami's four main area codes are 954, 786, 305 and 754. Both 786 and 305 cover North Miami Beach, Miami, Kendall, Miami Beach and Hialeah.
To make a call to a cell phone or landline in Miami from anywhere in the United States, a person should enter 10 digits, which include three digits of the area code and seven digits of the local number.