The Experience add-on for WordPress SLP or the Professional Plan for MySLP provides a “search by city”, “search by state”, and “search by country” feature. This search form element, when enabled, will build a drop down list based on the locations in your database. This is meant to provide a hint to the user where your locations are.
The base legacy plug-in is a simple “address input” feature. When the user clicks the search button it looks for locations closest to that location based on your other search form settings. If your default radius is 100 miles and the user selects the state of Texas, the base plug-in will search for all locations within 100 miles of Google’s estimated “center of Texas”. With the Experience add-on you can select certain settings to redirect the search selector and provide other options to direct or assist your site visitor.