Source Variables

Some unharmonized variables may not be available.

Variable Label
Type Codes Sample
US1940A_SMA35 Standard metropolitan area, 1935 P codes 1940 1%
US1980A_MIGMET5 Residence in 1975: State and County Group P codes 1980 5%
US1990A_MIGMET5 Migration state and PUMA P codes 1990 5%
US2000A_MIGPMA5 Migration MA: MSA/PMSA for Migration PUMA P codes 2000 5%