Maps of the National atlas of Ukraine as an information base for studying the formation of population size

This paper explores the use of the National Atlas of Ukraine as an information base for studying population formation processes in the country. The atlas comprises 865 maps, including a series depicting the dynamics of population size, structure, and distribution across Ukrainian regions from 1897 to 1989. Utilizing these maps alongside census data, the study analyzes the impact of various historical events—such as the World Wars, industrialization, famines, and the Chornobyl disaster—on demographic trends. Findings reveal significant population growth in eastern industrial regions due to migration and industrialization, while western and central areas experienced declines owing to war, repression, and resettlement. The atlas is highlighted as a crucial scientific resource for demographic historical research.