To get a whole state's data, you can use the ftp option here: http://www.census.gov/rdo/data/2010_census_redistricting_data_pl_94-171_summary_files.html That's probably overkill, but since with FactFinder you 1) can't select a town's blocks by themselves (only cities or counties) and 2) can't download (in my experience) a whole county's blocks through FactFinder), that may be the best option. You might check if the state has released the block data in an easier to manage format, too.