Jorge L. Chinea, director of Wayne State's Center for Chicano-Boricua Studies, is featured in a story about Hispanic Heritage Month, which runs from Sept. 15 to Oct. 15. The Mexican population in Wayne, Oakland, Macomb and Livingston counties leaped from about 48,000 people in 1990 to 103,000 in 2005, according to data from the U.S. Census Bureau. At the same time, Latinos in those four metro Detroit counties from countries other than Mexico also increased, from about 31,000 people to 38,000. The relatively small size of Detroit\'s Latino population has made for few divisions along geographic, social and national lines. Chinea, who moved to the U.S. mainland from Puerto Rico at age 13, says that in southwest Detroit, \"you don\'t have Puerto Ricans and Dominicans living\" in separate neighborhoods. \"You have Puerto Ricans living in Mexicantown, and that\'s unique by U.S. standards.\" A photo of Chinea is included.