I Want to Create a Searchable Business Directory

Hello,

I want to create a searchable Business Directory. I know how to do this using simple criteria like State and City. My current hurdle is figuring out how to do this by zipcode regions. I did some searching and found that there is a module called "Location" that touches on the concept but Im not sure if that is the way to go. DOes anyone here have any suggestions or has anyone else already done this? Thank you in advance.