We do not show ages, gender and locations of fans yet. This is a feature that will come soon. It will be available for your own profiles as it is private data.
What you can do is to check some demographic data for the most active fans of your own Facebook pages. Click on the ‘show details’ icon of your own Facebook page on the dashboard and check the section ‘Influencers’ – you will see statistics for the fans that interact most with your page – e.g. their countries of origin.