An overview of Euro-American internal migration in the United States between 1940 and 1980 explores the overall population movement away from rural areas to cities and suburban areas. Although focused on white Americans and their migrations, there are similarities to the Great Migration of African Americans, who continued to move out of the South during the mid-20th century. In the early period, the industrial areas in the North and West attracted most of the migrants. Mobilization for World War II loosened rural dwellers who were long kept in place by low wages, political disfranchisement, and low educational attainment. The war also attracted significant numbers of women to urban centers in the North and West. After the war, migration increased, enticing white Americans to become not just less rural but also increasingly suburban. The growth of suburbs throughout the country was prompted by racial segregation in housing that made many suburban areas white and earmarked many urban areas for people of color. The result was incredible growth in suburbia: from 22 million living in those areas in 1940 to triple that in 1970. Later in the period, as the Steelbelt rusted, the rise of the West as a migration magnet was spurred by development strategies, federal investment in infrastructure, and military bases. Sunbelt areas were making investments that stood ready to recruit industries and of course people, especially from Rustbelt areas in the North. By the dawn of the 21st century, half of the American population resided in suburbs.
