219 Area Code: Hammond, Indiana

The 219 area code covers the northwest corner of Indiana, with Hammond as the primary city in the directory's records. Hammond sits at the southern tip of Lake Michigan in Lake County, just across the Illinois state line from Chicago, and the city's working profile reflects its long-running role in the broader Calumet region's heavy industry — steel mills, oil refineries, and rail logistics have shaped the local economy for over a century. The 219 footprint reaches through Gary, East Chicago, Merrillville, Valparaiso, and the surrounding cities that fill out the Calumet area and the northern Indiana lakefront.

Records linked to 219 numbers in the directory often include other Indiana cities — Evansville, Fort Wayne, Indianapolis, and Lafayette among them. None of those are inside the 219 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Indiana and addresses linked across multiple cities through routine cross-referencing in our source data. The directory currently documents 347 distinct prefixes within 219 in detail, a working subset of the prefix population the code carries.

Hammond's home values come in well below the US median, in line with the broader Calumet region's lower housing costs. Median household income runs below the national figure, the city's median age sits a couple of years under the US reading, and population places Hammond among the larger northwest Indiana cities — substantial within its regional context but small in the broader Indiana-to-Chicago metropolitan landscape. The 219 footprint as a whole reflects a mix of industrial communities, lakeshore towns, and the inland counties of northwest Indiana.