Looking for a Store Locator Plugin

I’ve got a client that is looking for a store locator plugin for WordPress that does not use a map because most of their stores in other areas are not physical locations that clients can go to, however they have representatives in these areas that provide services to them directly.

Most of the locator plugins that I’ve found, however, want to add a physical location to a map as a store front that is then plotted on a map.

What my client would like to see is a form that a potential client fills out with their City, State/Zip Code that pops up the nearest representative to their location and gives them the contact information to get ahold of them in text form instead of on a map.

Does anyone have any ideas?