Verify/change application region at Google App Engine

Question

I\'m creating a GAE application.

When I set my GAE PHP application as an authorized application to access my Cloud SQL instance, I get the following warning:

Answer 1

You can see the location of your application at [1].

Regarding changing the region, please see [2] for more information.

[1] - https://appengine.google.com/
[2] - Change GAE application location

Update: EU app creation is now possible from the new Developers console and doesn't require whitelist / premier status. Looks like Location tab will only show in the GAE console if account was whitelisted / Premier. A way to find app location is still in the old GAE console -> from the list click on the app to go to the dashboard -> if you see e~ in the link after app_id=, your app is in EU, else if you see s~ your app is in the US.

Another alternative is to use gcloud command suggested by Ilya Zakreuski below.