Why is "COUNTY" not the same as "METFIPS" for an individual in CPS?


#1

Why is “COUNTY” not the same as “METFIPS” for an individual in CPS?

As I understand from variable description, both variables are fips code. I am looking at an individual in 2010 and both “COUNTY” and “METFIPS” are not masked.


#2

It is correct that both COUNTY and METFIPS use FIPS coding schemes, however, they identify different levels of geographies. In IPUMS CPS COUNTY is a concatenation of the FIPS state code with the FIPS county code for identifiable records. On the other hand METFIPS identifies metropolitan areas (e.g. an areas surrounding and including cities).