☕ David Antoine Well it's not a filter per se, that's why I used quotation marks. Just click on a user (its avatar/photo) and you will see his profile with the country marked in blue IF the user has selected one... Click on it and all the users for that country will be displayed with the actual (total) count. It doesn't seem to be possible to directly choose a country, unless you change/select yours in your settings and then click on it on your own profile... :)