Eight-million phone numbers aren’t enough. San Francisco wants more, more, more. And so the once-mighty 415 area code, which six decades ago stretched from the middle of California to the Oregon border, has suffered the final blow. It’s been sliced and diced and — beginning Saturday at a minute after midnight — it will be overlaid.
The 415 area code, which still covers San Francisco and parts of Marin and San Mateo counties, is being joined by the 628. The new number will be overlaid into the existing 415 geographical area, which means next-door neighbors will soon have different area codes
















