| District of Indiana area codes: 765 | |
|---|---|
| Country | United States |
| State/Province | Indiana |
| Major City | Indianapolis |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 765-331 | Blackford | Hartford City, IN | Ameritech Indiana |
| 765-332 | Henry | Straughn, IN | New Lisbon Telephone Co. |
| 765-333 | Randolph | Union City, IN | Mci Worldcom Communications |
| 765-334 | Wayne | Cambridge City, IN | Level 3 Communications |
| 765-335 | Boone | Lebanon, IN | Mci Worldcom Communications |
| 765-336 | Marion | Indianapolis, IN | Sprint Spectrum L.p. |
| 765-337 | Tippecanoe | Lafayette, IN | Frontier North |
| 765-338 | Fayette | Connersville, IN | Sprint Spectrum L.p. |
| 765-339 | Montgomery | Linden, IN | Tri - County Telephone Co. |
| 765-341 | Morgan | Martinsville, IN | New Cingular Wireless PCS - IL |
| 765-342 | Morgan | Martinsville, IN | Ameritech Indiana |
| 765-343 | Morgan | Martinsville, IN | Tw Telecom Of Indiana Lp |
| 765-344 | Parke | Rockville, IN | Ameritech Indiana |
| 765-345 | Henry | Knightstown, IN | United Tel. Co. Of Indiana DBA Centurylink |
| 765-346 | Morgan | Martinsville, IN | Cellco Partnership DBA Verizon Wireless |
| 765-347 | Blackford | Hartford City, IN | Tw Telecom Of Indiana Lp |
| 765-348 | Blackford | Hartford City, IN | Ameritech Indiana |
| 765-349 | Morgan | Martinsville, IN | Ameritech Indiana |
| 765-350 | Montgomery | Crawfordsville, IN | Omnipoint Communications Midwest Operations LLC |
| 765-351 | Delaware | Gaston, IN | Teleport Communications America |
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.