Where can I find statistics, polls or surveys on Hispanic population in the U.S. and reports on topics related to Hispanic population?
There are numerous sources of demographic and ethnic data ---many requiring careful plowing through statistical tables in governmental or state resources. Research can also be done in newspaper databases and journal databases, such as CQ Researcher (find these databases on the library's site at http://lib.sxu.edu/database). For a consolidated and current information and data on Hispanic population I recommend Pew Hispanic Research Center (http://www.pewhispanic.org/. This is a nonpartisan organisation that is part of the authoritative Pew Research Center.
"Founded in 2001, the Pew Hispanic Center is a nonpartisan research organization that seeks to improve understanding of the U.S. Hispanic population and to chronicle Latinos’ growing impact on the nation. The Center does not take positions on policy issues. It is a project of the Pew Research Center, a nonpartisan “fact tank” in Washington, DC that provides information on the issues, attitudes and trends shaping America and the world".