How do I search our customers by zip code?   Something seems simple, but I've wasted days trying to figure how to do this.  Any help?  Thanks

We have the same problem.    We hired Shopify experts, tried shopify suggested work-arounds but are unable to remove permanently customer tags in Shopify.  It makes no sense a company with 10,000 + employees can't figure how to delete customers tags ...

 Added my own extra input fields can't find how to resize in the code.