Census API: Examples for /data/2012/cfsprelim
Geography HierarchyGeography LevelExample URLNumber
2 examples
us010https://api.census.gov/data/2012/cfsprelim?get=TON_F&for=us:*&key=YOUR_KEY_GOES_HERE
https://api.census.gov/data/2012/cfsprelim?get=TON_F&for=us:00&key=YOUR_KEY_GOES_HERE