Area code 765 is a North American Numbering Plan

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 Central Indiana, excluding the Indianapolis Metropolitan Service Area. Some cities included are Marion

Marion, Indiana

Marion is a city in Grant County, Indiana, United States. The population was 29,948 as of the 2010 census. The city is the county seat of Grant County...

, Anderson

Anderson, Indiana

Anderson is a city in and the county seat of Madison County, Indiana, United States. It is the principal city of the Anderson, Indiana Metropolitan Statistical Area which encompasses Madison county. Anderson is the headquarters of the Church of God and home of Anderson University, which is...

, Crawfordsville

Crawfordsville, Indiana

Crawfordsville is a city in Union Township, Montgomery County, Indiana, United States. As of the 2010 census, the city had a population of 15,915. The city is the county seat of Montgomery County...

, Kokomo

Kokomo, Indiana

Kokomo is a city in and the county seat of Howard County, Indiana, United States, Indiana's 13th largest city. It is the principal city of the Kokomo, Indiana Metropolitan Statistical Area, which includes all of Howard and Tipton counties....

, Lafayette

Lafayette, Indiana

Lafayette is a city in and the county seat of Tippecanoe County, Indiana, United States, northwest of Indianapolis. As of the 2010 census, the city had a total population of 67,140. West Lafayette, on the other side of the Wabash River, is home to Purdue University, which has a large impact on...

, Muncie

Muncie, Indiana

Muncie is a city in Center Township, Delaware County in east central Indiana, best known as the home of Ball State University and the birthplace of the Ball Corporation. It is the principal city of the Muncie, Indiana, Metropolitan Statistical Area, which has a population of 118,769...

, Richmond

Richmond, Indiana

Richmond is a city largely within Wayne Township, Wayne County, in east central Indiana, United States, which borders Ohio. The city also includes the Richmond Municipal Airport, which is in Boston Township and separated from the rest of the city...

, Winchester

Winchester, Indiana

Winchester is a city in White River Township, Randolph County, Indiana, United States. The population was 4,935 at the 2010 census. The city is the county seat of Randolph County...

, and West Lafayette

West Lafayette, Indiana

As of the census of 2010, there were 29,596 people, 12,591 households, and 3,588 families residing in the city. The population density was 5,381.1 people per square mile . The racial makeup of the city was 74.3% White, 17.3% Asian, 2.7% African American, 0.16% Native American, 0.03% Pacific...

.

History

Originally, area code 317

Area code 317

Area code 317 is a North American Numbering Plan area code for Central Indiana. It serves most of the Indianapolis Metropolitan Service Area, including all of Indianapolis/Marion County and portions of the surrounding counties, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and...

covered all of Central Indiana. Eventually, population growth and increased number demand necessitated a split for the region. Beginning on February 1, 1997, with mandatory dialing effective June 28, the greater Indianapolis area retained 317 and the remainder of Central Indiana split off into area code 765.