Area code 317
Encyclopedia
North American Numbering Plan
The North American Numbering Plan is an integrated telephone numbering plan administered by Neustar which encompasses 24 countries and territories, including the United States and its territories, Canada, Bermuda, and 16 nations of the Caribbean...
area code for Central Indiana
Indiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...
. It serves most of the Indianapolis Metropolitan Service Area, including all of Indianapolis
Indianapolis, Indiana
Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...
/Marion County
Marion County, Indiana
Marion County is a county located in the U.S. state of Indiana. Census 2010 recorded a population of 903,393, making it the largest county in the state and 55th most populated county in the country, greater than the population of six states. The county seat is Indianapolis, the state capital and...
and portions of the surrounding counties, Boone
Boone County, Indiana
As of the census of 2000, there were 46,107 people, 17,081 households, and 12,810 families residing in the county. The population density was 109 people per square mile . There were 17,929 housing units at an average density of 42 per square mile...
, Hancock
Hancock County, Indiana
Hancock County is a county located in the U.S. state of Indiana. As of 2010, the population was 70,002. The county seat is Greenfield.-Geography:...
, Hamilton
Hamilton County, Indiana
Hamilton County is a county located in the U.S. state of Indiana. Census 2010 recorded a population of 274,569. The county seat is Noblesville....
, Hendricks
Hendricks County, Indiana
- Towns :*Amo*Avon*Brownsburg*Clayton*Coatesville*Danville*Lizton*North Salem*Pittsboro*Plainfield*Stilesville-Townships:*Brown*Center*Clay*Eel River*Franklin*Guilford*Liberty*Lincoln*Marion*Middle*Union*Washington-Further reading:...
, Johnson
Johnson County, Indiana
As of the census of 2000, there were 115,209 people, 42,434 households, and 31,613 families residing in the county. The population density was 360 people per square mile . There were 45,095 housing units at an average density of 141 per square mile...
, Madison
Madison County, Indiana
As of the census of 2000, there were 133,358 people, 53,052 households, and 36,234 families residing in the county. The population density was 295 people per square mile . There were 56,939 housing units at an average density of 126 per square mile...
, Morgan
Morgan County, Indiana
Morgan County is a county located in the U.S. state of Indiana. As of 2010, the population was 68,894. The county seat is Martinsville. Morgan is one of seven counties contiguous to Marion County, and is located between Indianapolis, in Marion County, and Bloomington, located in Monroe County...
, and Shelby
Shelby County, Indiana
As of the census of 2000, there were 43,445 people, 16,561 households, and 12,056 families residing in the county. The population density was 105 people per square mile . There were 17,633 housing units at an average density of 43 per square mile...
.
History
Originally, 317 covered all of Northern and Central IndianaIndiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...
and area code 812
Area code 812
North American area code 812 is the largest in area in Indiana, covering the southern third of Indiana, including the suburban areas of Louisville, Kentucky, and Cincinnati, Ohio and the northern half of the Evansville Metropolitan Area in addition to the moderately large cities of Bedford,...
covered Southern Indiana. However, in the first split of the area code system since its inception, Northern Indiana split off as area code 219
Area code 219
219 is the North American telephone area code for Northwest Indiana that includes Lake, Porter, La Porte, Newton, and Jasper counties. The area code includes such cities as Schererville, Chesterton, Lake Station, Crown Point, Cedar Lake, Hobart, Whiting, Gary, Hammond, East Chicago, Merrillville,...
in 1948. Eventually, population growth and increased number demand necessitated another split. Beginning on February 1, 1997, with mandatory dialing effective June 28, the greater Indianapolis
Indianapolis
Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...
area retained 317 and the remainder of Central Indiana split off into area code 765
Area code 765
Area code 765 is a North American Numbering Plan area code for Central Indiana. It serves most of Central Indiana, excluding the Indianapolis Metropolitan Service Area. Some cities included are Marion, Anderson, Crawfordsville, Kokomo, Lafayette, Muncie, Richmond, Winchester, and West...
.