Multiple Filter Options

I would like to display filter options on the listings page where users can choose from a list of variables to filter listing types. For example; I use CustomPress and I give listing creators ability to select from drop down to choose if the listing is retail or wholesale AND also to select if they live in US or Canada. How can we have filter options on the front end on the page to filter for retail listings that are also in the US.
The style would be that there should be a heading that says Type and beneath that the option to choose wholesale or retail (checkbox or dropdown) And again on the same page a heading that says Country and beneath that the option to choose US or Canada. (I actually have many more options that would need filtering capability)