Definition
GEO1_MX1990 identifies the household's state within Mexico in 1990. States are the first level administrative units of the country. A GIS map (in shapefile format), corresponding to GEO1_MX1990 can be downloaded from the GIS Boundary files page in the IPUMS International web site.
The full set of geography variables for Mexico can be found in the IPUMS International Geography variables list. For cross-national geographic analysis on the first and second major administrative level of any country refer to GEOLEV1, and GEOLEV2. More information on IPUMS-International geography can be found here.