User blog comment:Wightjaguar/Favorite species/@comment-24200891-20140127184528/@comment-9753034-20140128170640

They're not extinct, we just know 375 000 of them were evacuated 200 years before the events of the trilogy. Don't think any other precise numbers are mentioned, but for all we know, their population might've increased since.

While I'm at it: Quarians, geth, turians, drell, vorcha, hanar.