Area code 513

Area code 513 is a telephone area code in the North American Numbering Plan (NANP) for the southwest of the U.S. state of Ohio, including Cincinnati and surrounding cities, such as Forest Park, Hamilton, Lebanon, West Chester, Mason, Maineville, Middletown, Norwood, Oxford, Harrison, Cleves, Miamitown, and Trenton.

The regions shown in blue are in Ohio.

History
The four original numbering plan areas of Ohio

Ohio was divided into four numbering plan areas (NPAs) in the first definition of the nationwide telephone numbering plan of October 1947. Area codes 216, 419, 513, and 614 were assigned to essentially four geographic quadrants of the state. Area code 513 designated a numbering plan area (NPA) that comprised the entire southwestern quadrant of Ohio.

Due to the proliferation of cell phones and pagers in the 1990s, the numbering plan area had to be split in 1996 to provide more central office prefixes and telephone numbers. The eastern and northern portions, including Dayton received area code 937.

In 2000, area code 283 was assigned to numbering plan area 513 for a future overlay plan. Although permissive dialing began on January 15, 2001, the implementation was suspended, because of the economic downturn and the return of telephone numbers as a result of the abandonment of service by competitive local telephone companies.[1] As projected, 283 does not need to be implemented until at least 2024.[2] This makes Cincinnati one of the largest cities where seven-digit dialing is still possible.

Before the public announcement of the original North American area codes in 1947, area code 513 had been considered for assignment in the western third of Iowa, i.e. west of Des Moines, including Sioux City and Council Bluffs. Instead, the area ended up getting 712.[3]

Very similar to how Manhattan is known as "212", Cincinnati is sometimes colloquially referred to as the "513".

See also

References
  1. Pending Area Code Exhausts Archived September 29, 2006, at the Wayback Machine. The Public Utilities Commission of Ohio. October 2006.
  2. https://www.nationalnanpa.com/pdf/NRUF/2017-1-NPA-Exhaust-Projections-Final.pdf
  3. The U.S. Government History of Area Codes. November 2007 Archived August 1, 2013, at the Wayback Machine
Ohio area codes: 216, 220/740, 234/330, 380/614, 419/567, 440, 513, 937/326
North: 937/326
West: 812/930, 765 area code 513/283 East: 937/326
South: 859, 606
Indiana area codes: 219, 260, 317/463, 574, 765, 812/930
Kentucky area codes: 270/364, 502, 606, 859

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