Although Central and Eastern Europe (CEE) is sometimes referred to as a buffer zone (Iglicka 2001) because of its location between the huge Asian continent and Western Europe, it is also an area of intense and diverse migration flows both internal and external. In a broader sense, the region of Central and Eastern Europe may include countries of the Visegrád Group (Czech Republic, Hungary, Poland and Slovakia), the states of the former USSR, as well as southern post-communist states, Bulgaria and Romania, and even the states of the former Yugoslavia and Albania (Okólski 2004; Castles, Miller 2003). This extensive list includes both the countries whose accession to the European Union took place between 2004-2013 (the Visegrád Group countries, the Baltic states, Slovenia, Romania, Bulgaria and Croatia), as well as countries which are not EU member states. The EU enlargements created a considerable difference between the status of the countries which became part of the EU and the other states of the region, and influenced intra- and extra-regional migration processes. Mobility in CEE should be analysed with reference to the interrelated fundamental social, economic, and political changes taking place in the region. First, notable is the shrinking and aging of the societies in CEE countries, brought about by fertility decline and family breakdown. Second, we must consider existing migration pressure and intensified post-accession emigration. Third, what is specific to the region are the processes of European integration and of the related profound modernisation. All of the above features create a unique combination of migration-related factors.