Is it possible to easily locate zip codes from a list of addresses?

You lost me at the first line ... "I've been attempting to locate zip codes from a long list of addresses that do not contain zip codes"

Does that make sense? It doesn't to me. Perhaps you could provide some sample data of what you will be starting with, and also some sample data of what you want to see as results.

Johnny, sounds to me they have a long list of addys that dont have zip codes, and they need to search a (different?) DB that does have zip codes

Johnny - this really isn't very helpful. Even if the search facility here were good (and it isn't), nobody would be able to find the thread in question without searching every single post you had ever made. How about sharing a link to the thread in question, which might indeed be helpful???

I am not apologising for it, either - it's not my fault, but it is really poor (it's the fault of the forum software used and that is beyond the admin and mod team's control - the owners won't update it). Thanks for the link, which might help the OP.