hough international nonprofits are just 2 percent of the U.S. charitable nonprofit sector, they have continued to grow in size and scope to meet pressing demands around the world. International organizations are a growing part of the U.S. nonprofit sector and play a vital role here and abroad, connecting Americans to the world and the world to Americans. Whether arranging international student exchanges, assisting victims of foreign disasters, or influencing policy between nations, U.S.-based international nonprofits are expanding the interactions that Americans have with people, places, and ideas from around the world. They contribute to, and are shaped by, the globalization that is redefining the world in which we live. Despite their increasing importance, these organizations have largely been understudied as a subsector of U.S. nonprofits. Newly available data from the Urban Institute's National Center for Charitable Statistics/GuideStar database make it possible to profile important characteristics of this set of organizations, as a whole and by major subgroups. The data consist of information that 501(c)(3) organizations, with $25,000 or more in annual revenue, have filed on Forms 990 with the Internal Revenue Service. Information gathered represents the most comprehensive nonprofit data yet assembled on the U.S. international nonprofit sector.