On the homepage, you are able to restrict which region you view listings from by using the region selector.

First, select the country:

Then, select the region (state)  that you want your listings filtered by:

Now all listings that are shown will only be from your selected region. Note: the region setting will remain set for as long as your browser cookie is set. 

To clear your selected region when you have finished, simply click on "clear selection" or the "clear" button under the region name.