The economic migration of Bulgarians to the Czech Republic began in the 1990s. 4,363 citizens claimed to have Bulgarian nationality in the 2001 census. They mostly live in the large cities and towns, such as Praha, Brno, Ostrava, Karlovy Vary, Kladno, Ústí nad Labem, Děčín, and Havířov. Nowadays the newcomers from Bulgaria aim for these areas in particular, where they can join an already established community. Many of these economic immigrants have dual citizenship of both the Czech Republic and Bulgaria. However most of the recent immigrants still only have Bulgarian citizenship.