The Geographic Navigation Addon is a FREE Addon that allows the listings on your site to be "filtered" using the Country and State/Province, along with unlimited sub-region levels (if desired). The regions used for Geographic Navigation can be countries and states/provinces, or a mix of countries and states/provinces and top-level regions and sub-regions, or if you prefer, ONLY top-level regions and sub regions so that built in countries and states don't factor in at all.

To use this addon, you would place the addon's tag somewhere in the template for the page you want to display the geographic navigation on. Then it will show the geographic navigation, where the user would first select the top level region¹⁾, then optionally the sub region, then sub-sub-region, etc. to filter by. The user does not have to filter by sub region, if they only select the top level region it will only display listings from that main region.

If the site only has 1 main region configured, that region will automatically be selected and it will start out displaying the sub-regions of that main region.

See the screenshots on the settings page for examples of what the "Geographic Navigation" looks like, and further details on the optional mixing of unlimited sub-region levels with built in countries and state/provinces.