Search by Zip Code and Distance

Thanks to everyone for the feedback.

It does seem using the Google Map API makes sense. I'll have to work through the tutorials on the Google Map API pages to fully understand how  I might integrate it into a Codeigniter built website.

I see I will also need an additional feature for my website's administration area where I would enter the store addresses.

In that case, the address or zip code would need to be converted to latitude and longitude values and stored in the database that way. It seems the Google Map API can also help with that.