This article discusses two studies on the extent and nature of cross-racial interactions (CRIs) among undergraduate students from two neighboring US-Mexico borderland communities. Of the four participating higher education institutions, two were adjacent to the US-Mexico borderline, while the other two were 45 miles away from the borderline. One study relied on survey responses from over 900 students, while the other relied on focus group data from over 30 students. The participating students were from two universities and two community colleges. Although the students shared some common experiences and attitudes, there were some marked and important differences among them. These differences made a compelling argument for localizing what diversity means and customizing efforts to foster CRIs on college campuses.