| District of Indiana area codes: 765 | |
|---|---|
| Country | United States |
| State/Province | Indiana |
| Major City | Indianapolis |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 765-640 | Madison | Anderson, IN | Ameritech Indiana |
| 765-641 | Madison | Anderson, IN | Ameritech Indiana |
| 765-642 | Madison | Anderson, IN | Ameritech Indiana |
| 765-643 | Madison | Anderson, IN | Ameritech Indiana |
| 765-644 | Madison | Anderson, IN | Ameritech Indiana |
| 765-645 | Rush | Lewisville, IN | Frontier North |
| 765-646 | Madison | Anderson, IN | Ameritech Indiana |
| 765-647 | Franklin | Brookville, IN | Frontier North |
| 765-648 | Madison | Anderson, IN | Ameritech Indiana |
| 765-649 | Madison | Anderson, IN | Ameritech Indiana |
| 765-650 | Clinton | Frankfort, IN | New Cingular Wireless PCS - IL |
| 765-651 | Grant | Marion, IN | Ameritech Indiana |
| 765-652 | Clinton | Frankfort, IN | United States Cellular Corp. - Indiana |
| 765-653 | Putnam | Greencastle, IN | Frontier North |
| 765-654 | Clinton | Frankfort, IN | Ameritech Indiana |
| 765-655 | Putnam | Greencastle, IN | Frontier North |
| 765-656 | Clinton | Frankfort, IN | Ameritech Indiana |
| 765-657 | Putnam | Greencastle, IN | United States Cellular Corp. - Indiana |
| 765-658 | Putnam | Greencastle, IN | Frontier North |
| 765-659 | Clinton | Frankfort, IN | Ameritech Indiana |
There are 613 prefixes, In the code area, the major cities are Anderson, IN;Kokomo, IN;Lafayette, IN;Marion, IN;M. The major city is Indianapolis.