This plugin allows a WordPress Site Admin to enter locations of stores etc into the db. The information is then displayed on the front end 
using the google maps interface. The user can enter a starting location in the search field, the system will then find the closest location from 
it’s starting point and display the path and steps necessary to get to that location. If many locations are available in a similar range range, 
the plugin will request the driving distance between the two closest locations. It help to avoid the pitfall of getting an office across a river 
which may take a lot of driving to get to.
This plugin requires a valid Google Maps API key (free) from Google. If you do not have an API key you may get one here. 
http://code.google.com/apis/maps/signup.html
The actual google maps functionality is based on GoogleMapAPI – A library used for creating google maps. Which can be found here 
http://www.phpinsider.com/php/code/GoogleMapAPI/

GoogleMapper

This plugin allows a Wordpress Site Admin to enter locations of stores etc into the db.  The user can then search for the closest location.

Cris Puno

This is a Store Locator plugin for WordPress that incorporates Google Maps.
What it can do:
<ul>
<li>Adds a custom post type called Stores for input of store locations</li>
<li>Automatically retrieves Google Maps coordinates of location</li>
<li>Lets you add a store locator in any page/post using a shortcode</li>
<li>Search by entering city and state/province, zip/postal code or part of an address</li>
<li>Shows results on right ordered by distance</li>
</ul>
More information and a demo can be found at <a href="http://www.crispuno.ca/?p=250" rel="nofollow ugc">my site</a>.

Pazzey's Store Locator

Very limited options, no way to set location or zoom for map. However, it is simple to use and may suit smaller projects.
View our full review of Pazzey's Store Locator and other Store Locator Plugins.



Limited options

Store Locator Plugin that lets you embed a Google Maps powered store locator.

GoogleMapper vs Pazzey's Store Locator