Data Cart

Your data extract

0 variables
0 samples
View Cart
GEO_NG1990 (V101_NG1990)
Nigeria regions, 1990 [GIS]

Codes and Frequencies

Can't find the category you are looking for? Try the Detailed codes


GEO_NG1990 (V101_NG1990) indicates the region of Nigeria where the respondent was interviewed. DHS regions in the 1990 Nigeria survey are equivalent to grouped states.

Other sample years have their own sample-specific geography variables. There are also integrated variables, GEO_NG2003_2013 and GEOALT_NG2008_2013, that provide spatially consistent units over time. The 1990 Nigeria sample is excluded from GEO_NG2003_2013 and GEOALT_NG2008_2013 due to inconsistent boundaries.

A GIS map for GEO_NG1990 (in shapefile format) can be downloaded from the DHS Program Spatial Data Repository Boundaries page.


GEO_NG1990 (V101_NG1990) is a country- and sample-specific variable and has no comparability issues.

Comparability - Standard DHS

GEO_NG1990, like other V101 variables, is a geographic variable added during processing of the DHS data. V101 is included in all Phases of the DHS.


  • Nigeria 1990: All women age 15-49.
  • Nigeria: 1990-B, 1990-H, 1990-W, 1990-C