DemographicsNow provides users with ready-to-use and customizable demographic data reports that include population, income, housing, race, age, education, businesses and retail sales, consumer expenditures and more.
STATS America is a service of the Indiana Business Research Center at Indiana University's Kelley School of Business. They collect data from federal and state sources, along with some commercial or private sources. The site provides state and county profiles. Tabs at the top allow you to click through multiple reports.
After picking the geographic area you are interested in (Either state, county,minor civil division (MCD), census tract or census block group) you can choose to view one of a number of demographic reports, regional profiles , or a report from the 2007 Agricultural Census. You can also find data from the 1990 census here. 1990 data is not included in American FactFinder anymore.
Located at the University of Minnesota, the Minnesota Population Center disseminates demographic information to researchers worldwide. Resources at the Minnesota Population Center include Canadian and British as well as US census data. You can also find interview data and historical GIS boundary files at this site.