| 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 |
|---|---|---|---|
| 219-944 | Lake | Gary, IN | Ameritech Indiana |
| 219-945 | Lake | Hobart, IN | Frontier North |
| 219-947 | Lake | Hobart, IN | Frontier North |
| 219-949 | Lake | Gary, IN | Ameritech Indiana |
| 219-951 | Lake | Gary, IN | Level 3 Communications |
| 219-954 | Pulaski | Francesville, IN | New Cingular Wireless PCS - IL |
| 219-956 | Jasper | Wheatfield, IN | United Tel. Co. Of Indiana DBA Centurylink |
| 219-961 | Lake | Highland, IN | Teleport Communications America |
| 219-962 | Lake | Lake Station, IN | Frontier North |
| 219-963 | Lake | Lake Station, IN | Frontier North |
| 219-964 | Jasper | Rensselaer, IN | Level 3 Communications |
| 219-972 | Lake | Highland, IN | Ameritech Indiana |
| 219-973 | Lake | Hobart, IN | Sprint Spectrum L.p. |
| 219-977 | Lake | Gary, IN | Ameritech Indiana |
| 219-979 | Lake | Gary, IN | Broadwing Communications |
| 219-980 | Lake | Gary, IN | Ameritech Indiana |
| 219-981 | Lake | Gary, IN | Ameritech Indiana |
| 219-983 | Porter | Chesterton, IN | Frontier North |
| 219-984 | White | Reynolds, IN | United Tel. Co. Of Indiana DBA Centurylink |
| 219-985 | Lake | Gary, IN | Ameritech Indiana |
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.