From the Pew Research Center:
Many State Data Centers (here is a map with links to all of them) have repackaged census data for their localities in simple-to-use tables. In Alaska, the look-up includes Alaska native villages and tribal areas as well as cities, boroughs and other units of geography. California offers detailed data and some numbers from earlier years. Colorado offers rankings as well as data. Connecticut offers a color-coded map of population change and Indiana has population maps by school district and other geographies. Pennsylvania has detailed group quarters numbers for each of its counties.
Also take a look at the “Sites & Sources” section in the right-hand column. This very blog is linked! Way cool.