In looking at the geography levels supported by 2012 ACS, I don't see block-level data.
I am looking for block data support like this (that I'm using from 2010 decennial survey):
Is there another/better way to get block ACS data?
Voting on Ideas
Vote for your favorite ideas by clicking on the up arrow.To undo an upvote, simply click the arrow again. This second click removes your vote.