I'm trying to set up a Formidable Form where users enter their ZIP code, and based on their entry, they get a message letting them know if they are inside or outside our service area.

I service a large area so my list of ZIPs is pretty long. It seems like a dropdown isn't the best for such a long list, what do you all think? 

The only other way I can think of doing this right now is conditional logic, but I'd have to set one up for each ZIP, which seems inefficient. Is there a better way to do it? What I'd love is to be able to paste my list somewhere and have Formidable check against it. Like, only allow this field to accept ZIP codes from this list.