Technically - you can send your doe application to any county treasurer and they will process your doe license application for you.
There is no more lottery type system for drawing tags for a certain zone. Licenses are sold on a first come, first sold basis. They enter your application into the computer and as long as that zone is not sold out - you get a doe license.
The bad part is - they have alternate zones which you can apply for - if your zone sells out. You never know until you get your license back - which zone you were chose for.
There are some zones in Pennsylvania where there is a unlimited allocation of doe licenses and you can apply for and buy as many as you wish. Not that there is a lot of places where you can openly hunt in Allegheny county of Philadelphia.