[TedDoesntTalk]

That’s not what I’m talking about. And since number portability and mobile devices became possible, area codes are mostly irrelevant. For example, I’ve lived 2000 miles from the area code of my phone number for probably 10 years now.

[daenz]

They're not mostly irrelevant. 72% of Americans live in or close to the city that they grew up in. Area code is remarkably accurate.