Economic growth is not a completely modern and sovereign economic phenomenon, but has emerged over several centuries, and it is synonymous for the growth of each state, and represents the total quantitative removal of productive countless countries and the growth of its production over time. Migrations have always been considered problematic by peoples' movements, from the beginning of the civilizations of humanity, which already separated the search for better works of existence than in which they lived then. Throughout history, these migrations occurred spontaneously, and people were complex in their journey to their destination to settle in better existential conditions in places that provided them with better living conditions and today can provide a better standard of living. The aim of this paper is to investigate the theoretical determinants and models of economic growth and its activities in Croatia, as well as the theoretical determinants and history of the development of migration in Europe and the activities of Croatia in contemporary migration. The purpose of the paper is to recognize the importance of migration for the economic growth of some countries and to see how strong their impact is on the number of domestic economic growth in the country.