Area code 219 is a telephone area code in the North American Numbering Plan for Northwest Indiana, including the state's portion of the Chicago metropolitan area. The numbering plan area includes the cities of Schererville, Chesterton, Lake Station, Lowell, Crown Point, Cedar Lake, Hobart, Whiting, Gary, Hammond, East Chicago, Merrillville, Munster, Griffith, Highland, Portage, Valparaiso, Michigan City, Ogden Dunes, St. John, La Porte, DeMotte, Roselawn, Kouts, Lake Village, and Rensselaer. 219 is largely coextensive with the Indiana side of the Chicago metropolitan area, which includes Lake, Porter, La Porte, Newton, and Jasper Counties. Service is provided by AT&T, Frontier Communications, and Northwestern Indiana Telephone Company.