List of International Statistical Agencies (scroll to bottom of the page to see this list).
Nearly every national government provides data on national statistics and related information, usually as part of an official government website. Many of these sites includes data that can be downloaded into spreadsheets and other software and a growing number offer mapping capabilities. Unlike the U.S., many other countries maintain a single statistics bureau. Not all data, however, is free to the public.
This U.S. Census Bureau site includes a list of International Statistical Agencies.