Postal code routing

Q should probably be in Products​. 

Anyway, the answer is another question: Do you have a service with which someone can lookup a rep by postal code? Because without that, there's nothing for Marketo (or SFDC) to consult.

For example, I just rolled out a form for a client that automatically selects the lead's local dealer based on zip code.  But for this to work they obvs. had to have a service I could call to populate the dealer info.  If you had a similar service, you could easily call out to it via webhook when the lead comes in. (Or you could call the webhook from the Excel side before uploading, for that matter.)

The key, then, is to be prepared with a way of mapping postal codes to reps. Interfacing with that "way," whatever it is, is the easier part,