Geography Extras

PUMA to County Widget [PDQ-Explore output]
This widget takes output from PDQ-Explore and converts PUMA-based characteristics to county-based characteristics
Link
PUMA to County Widget [American FactFinder output]
This widget takes output from American FactFinder and converts PUMA-based characteristics to county-based characteristics
Link
Mable/Geocorr Correspondence Engine [2000]
This is a geographic correspondence tool or crosswalk across various 2000 geographies such as Congressional Districts, counties, places, zip codes, census tracts, block groups, voting districts, and school districts.

Link