Indiana Area Code Directory Details

The NANPA is the system which deals and holds the overall responsibility for the neutral administration of NANP numbering resources and it follows the directives from the regulatory authorities in the countries which follow NANP. The main responsibilities of NANPA include the assignments of NANP resources and to supervise the coordination of area code relief planning. It also collects and utilizes the forecast data.

The NANPA has no role to play in the policy making procedures. It follows the directives established by the regulatory authority and industrial guidelines. The responsibilities of NANPA is laid down by the Federal Communication Commission or the FCC and it can also be found in the comprehensive technical requirements drafted by the industry of telecommunications and approved by the FCC.

In various NANP countries the regulatory authorities have made it clear to the national administrators to oversee the numbering resources that were assigned by the NANPA for use within the country. For the U.S. and its territories are administered by Neustar.

Based on the population of the participating countries, NANPA costs are allocated and then adjusted as per the NANPA services used by each country. The state of Indiana which falls under the NANPA only required to pay the costs of the NANPA services they use. 

Area Codes in Indiana

In the northern region of Indiana there are three area codes which cover the entire area. The northwest part of the state falls under the area code 219 and it includes the cities like Hammond, Gary, Valparaiso, Merrillville and Michigan City. The north central part of Indiana is covered by the area code 574 and it includes the cities of Warsaw, South Bend and North Judson. The northeast part of the state of Indiana is covered by area code 260, which includes the cities like Angola and Fort Wayne.

Area code 219 used to cover the entire the northern part of Indiana before January 2002. The rise in population and the growth of Cell Phone numbers in this region have forced the telecom authorities to split the entire area into 3 area codes. After random inspections and drawings the northwest part of Indiana was allowed to retain the area code 219.

The entire central part of the state of Indiana is covered by area code 765, the only exception being the Indianapolis Metro area. The Indianapolis Metro area falls under the area code 317. Area code 317 covers Hancock County, Boone County, Hendricks County, Hamilton County, Madison County, Johnson County, Shelby County and Morgan County.

The southern Indiana part is covered by area code 812. The cities which fall under this area code are Vincennes, Evansville, Bloomington, Terre Haute, Madison, Columbus and Clarksville.

Area Code 219

Area code 219 covers 10 counties with a population of around 791,788. The counties which fall under this area code are Benton, Jasper, La Porte, Lake, Newton, Porter, Pulaski, St. Joseph, Starke and White. Area code 219 also covers 62 cities and it has 311 exchanges.

Area Code 260

Area code 260 covers 12 counties with a population of around 664,277. The counties which fall under area code 260 are Adams, Allen, De Kalb, Huntington, Jay, Kosciusko, Lagrange, Noble, Steuben, Wabash, Wells and Whitley. There are 64 cities covered by area code 260. It has 328 exchanges.

Area Code 317

Area code 317 covers 18 counties with a population of around 1,395,296. The counties which fall under this area code are Bartholomew, Boone, Delaware, Hamilton, Hancock, Hendricks, Henry, Johnson, Madison, Marion, Monroe, Morgan, Putnam, Rush, Shelby, Switzerland, Tipton and Wayne. Area code 317 also covers 61 cities and it has 657 exchanges.

Area Code 574

Area code 574 covers 12 counties with a population of around 690,542. The counties which fall under the area code 574 are Carroll, Cass, Elkhart, Fulton, Kosciusko, La Porte, Marshall, Miami, Pulaski, St. Joseph, Starke and White. Area code 574 covers 57 cities and it has 309 exchanges.

Area Code 765

Area code 765 covers 44 counties with a population of around 1,213,438. Some of the counties which fall under this area code are Adams, Benton, Blackford, Boone, Butler, Carroll, Cass, Clay, Clinton, Decatur, Howard, Henry, Miami, Madison, Morgan, Rush, Shelby, Tippecanoe, Tipton, Vermillion, Wabash, Warren, Wells and few others. Area code 765 covers 223 cities and it has 610 exchanges.

Area Code 812

Area code 812 covers 44 counties with a population of around 1,422,643. The counties which fall under area code 812 are Bartholomew, Brown, Clark, Clay, Crawford, Daviess, Dearborn, Decatur, Dubois, Floyd, Franklin, Gibson, Greene, Harrison, Jackson, Monroe, Morgan, Ohio, Orange, Owen, Parke, Perry, Pike, Posey, Scott, Shelby, Spencer, Sullivan, Switzerland, Vanderburgh, Vigo, Warrick, Washington and others. Area code 812 covers 260 cities and it has 707 exchanges.