| District of Indiana area codes: 219 | |
|---|---|
| Country | United States |
| State/Province | Indiana |
| Major City | Valparaiso |
| Time Zone | Central (UTC-06:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 219-512 | Lake | Gary, IN | Sprint Spectrum L.p. |
| 219-513 | Lake | Hammond, IN | Ameritech Indiana |
| 219-515 | Lake | Dyer, IN | Mcleodusa Telecommunications Services- In |
| 219-525 | Lake | Merrillville, IN | Level 3 Communications |
| 219-531 | Porter | Valparaiso, IN | Frontier North |
| 219-544 | La Porte | La Crosse, IN | New Cingular Wireless PCS - IL |
| 219-545 | Lake | Gary, IN | Sprint Spectrum L.p. |
| 219-548 | Porter | Valparaiso, IN | Frontier North |
| 219-552 | Newton | Lake Village, IN | Ameritech Indiana |
| 219-554 | Lake | Hammond, IN | Ameritech Indiana |
| 219-558 | Lake | St John, IN | Ameritech Indiana |
| 219-561 | La Porte | Michigan City, IN | Sprint Spectrum L.p. |
| 219-567 | Pulaski | Francesville, IN | United Tel. Co. Of Indiana DBA Centurylink |
| 219-575 | La Porte | La Porte, IN | New Cingular Wireless PCS - IL |
| 219-576 | Lake | Merrillville, IN | Fbn Indiana-in |
| 219-577 | Lake | Crown Point, IN | Fbn Indiana-in |
| 219-585 | La Porte | Westville, IN | Mcc Telephony Of The Mid-west |
| 219-588 | Lake | Gary, IN | T-mobile Usa |
| 219-595 | Lake | Highland, IN | Comcast Phone Of Central Indiana |
| 219-604 | White | Reynolds, IN | New Cingular Wireless PCS - IL |
There are 348 prefixes, In the code area, the major cities are East Chicago, IN;Gary, IN;Hammond, IN;Highland, IN. The major city is Valparaiso.