Area code 305 was the default area code in the state of Florida, and still currently serves all of Miami-Dade County and the Florida Keys, including Miami and Key West. The area code is also overlaid by area code 786, but only in Miami-Dade County and not in the Keys portion of Monroe County; the mainland portion of Monroe County is served by area code 239. Due to this overlay, mandatory 10-digit calling is required for the Miami-Dade County portion of the area code, but not for the Florida Keys. [1] A telephone numbering plan is a system that allows subscribers to make and receive telephone calls across long distances. ... Official language(s) English Capital Tallahassee Largest city Jacksonville Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 22nd 170 451 km² 260 km 800 km 17. ... Miami-Dade County is a county located in the southeastern part of the state of Florida. ... Palm trees in Islamorada The Florida Keys are an archipelago or cluster of about 1700 islands in the extreme southeast of the United States. ... The Magic City, The American Riviera, The Sixth Borough Location of Miami in Miami-Dade County, Florida. ... Key West buoy marking the Southernmost point in the continental United States is located in Key West, Florida, at the end of U.S. Highway 1. ... Location in the state of Florida Formed 1823 Seat Key West Area  - Total  - Water 9,679 km² (3,737 mi²) 7,097 km² (2,740 mi²) 73. ... Area code 239 covers a large area of Southwest Florida including Lee and Collier counties as well as small parts of Hendry and Charlotte counties and the Everglades National park in Mainland Monroe County. ...

Area code 305 was originally the default area code for the entire state of Florida. The western part of the peninsula from the Tampa Bay area south, which was served by non-Bell System telephone companies, was separated into area code 813 in 1953. As a result of the increase in the state's population, Northern Florida, from the Panhandle to Jacksonville, was assigned area code 904 in 1965. This lasted until 1988 when the east coast of Florida from Palm Beach County north through Brevard County, as well as the Orlando metropolitan area was assigned area code 407. In 1995 Broward County was split from 305 and assigned area code 954. In 1997 area code 786 was assigned to relieve the large demand for phone lines in the Miami area.[2] The Tampa Bay area is a metropolitan area on the Gulf coast of west-central Florida. ... The Bell System was a trademark and service mark used by the US telecommunications company American Telephone & Telegraph Company (AT&T) and its affiliated companies to co-brand their extensive circuit-switched telephone network and their affiliations with each other. ... Area code 813 is the telephone numbering plan code for the city of Tampa, Florida and surrounding areas such as Zephyrhills and Oldsmar. ... Official language(s) English Capital Tallahassee Largest city Jacksonville Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 22nd 170 451 km² 260 km 800 km 17. ... The westernmost 16 counties in the state. ... Nickname: Where Florida Begins Motto: Official website: http://www. ... Palm Beach County is a county located in the state of Florida. ... Location in the state of Florida Formed 1844 Seat Titusville Area  - Total  - Water 4,032 km² (1,557 mi²) 1,395 km² (539 mi²) 34. ... Nickname: The City Beautiful Motto: Official website: http://www. ... The 407 area code formerly covered large portions of central and south Florida. ... Location of county in the state of Florida County Seat Fort Lauderdale, Florida Area  - Total  - Water 3,418 km² (1,320 mi²) 296 km² (114 mi²) 8. ... Area code 954 went into service on September 11, 1995, for all telephones within Broward County, Florida. ...