Globalization, the growth of cities and the global movement of people are increasingly interrelated processes. It is impossible to understand the processes of globalization without studying cities, as they are the central locations in which global interconnections are forged. Yet most contemporary research on globalization and global cities overlooks the economic and socio-cultural impacts that immigrants have on these cities, as well as the linkages immigrants create with their countries of origin. We know that most contemporary economic immigrants settle in cities yet most countries only report immigrant flows at the national level. This web site is dedicated to identifying and tracking urban immigrant gateways. In addition it provides information for examining the ethnic composition or urban immigrant destinations, mapping patterns of settlement, and exploring how these cities benefit from and struggle with large numbers of diverse people.

The GUM site is an on-going collaborative research site and network oriented towards gathering empirical data at the urban-level to measure immigration in cities around the world. As far as we know, there is no other source where urban-level data on immigration is available for global cities. GUM currently has information for more than 150 metropolitan areas (over 1 million in population) and it draws data from more than 50 countries. The data sets, pie charts and maps available on this site, allow researchers to add to their understanding of the impact of globalization and immigration on cities. How cities navigate immigrant-driven cultural diversity will shape local and national policy debates in the years ahead. To better inform these debates, we have developed this web site to make the urban level data we have acquired available to the public. We invite scholars and policy makers to contribute their work and urban-level data to GUM to better inform policy discussions and research on urban-level immigration.

The initial research for and development of this web site have been supported by a generous grant from the George Washington University Center for the Study of Globalization. For comments and contributions to the website please contact the principal investigators Lisa Benton-Short and Marie Price.