Census tracts are listed first. Where you see a census tract with a hyphen, the number after the hyphen is the block group number. Blocks are listed for purposes of validating data, but the actual data comes from estimates, as blocks do not include data at the level of detail needed.
22-1 blocks 1001-1002, 1009-1012(about 1/3 of the block group) 23-1 27 blocks 1000-1001 28 blocks 1002-1004
UAC, 11/1/04