| 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 |
|---|---|---|---|
| 219-751 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-752 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-754 | La Porte | La Crosse, IN | Frontier North |
| 219-755 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-756 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-757 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-759 | Porter | Valparaiso, IN | Frontier North |
| 219-762 | Porter | Portage, IN | Frontier North |
| 219-763 | Porter | Portage, IN | Frontier North |
| 219-764 | Porter | Portage, IN | Frontier North |
| 219-765 | Lake | Crown Point, IN | New Cingular Wireless PCS - IL |
| 219-766 | Porter | Kouts, IN | Frontier North |
| 219-767 | La Porte | Union Mills, IN | Frontier North |
| 219-769 | Lake | Merrillville, IN | Ameritech Indiana |
| 219-770 | Lake | Crown Point, IN | Usa Mobility Wireless |
| 219-771 | Porter | Portage, IN | New Cingular Wireless PCS - IL |
| 219-775 | Lake | Crown Point, IN | New Cingular Wireless PCS - IL |
| 219-776 | Lake | Crown Point, IN | New Cingular Wireless PCS - IL |
| 219-778 | La Porte | Rolling Prairie, IN | Frontier North |
| 219-779 | Lake | Crown Point, IN | Bandwidth.com Clec |
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.