I'd love to be able to search though all of my accounts for those in a certain time zone, city, zipcode.

Hi Jennifer, this sounds like a view that could be setup or modified on the Customers tab by your Gainsight Administrator. They just need to add the desired fields (time zone, city, zip, region, etc.) to the UI View. Below is a screenshot from my demo org of how this might look:

This article describes for the Admin how to create/edit UI Views for the Customers tab:  https://support.gainsight.com/Product_Documentation/Reports_and_Dashboards/Admin_Configuration/Creat...