Area Code 519 covers southwestern Ontario, stretching from Windsor to London to Guelph. In place since 1953, 519 has long been the numeric backbone of a region known for manufacturing, agriculture, and education. A call from 519 could come from an auto plant, a university lab, or a town council, each deeply rooted in the Ontario heartland. Even with the addition of overlays like 226 and 548, 519 remains the original, widely respected, and still desired. For many, 519 is a connection to a region that balances history and innovation. It’s a number that still means something.