Data Documentation

Standardized Data Set Documentation

Data Dictionary for GPW4.10 Metadata Layers in the POPGRID Map Viewer

 
Input Data Type
The type of population data source used as input to GPWv4.10 for a given country. Categories include Preliminary/provisional census, Population register, Population estimate/projection, and Final census.
 
Year of Input Data
The year of the population data used as input to GPWv4.10 for a given country.
 
Admin Level of Input Data
The administrative level of the population data used as input to GPWv4.10 for a given country. Administrative level 0 corresponds to Country, Administrative level 1 corresponds to State/Province, Administrative level 2 corresponds to County/District, and so on. The highest adminstrative level possible for a given country is Enumeration Area, but the admin level number corresponding to this varies. The Average Size of Input Geography should be consulted to understand the nominal size of input geographies.
 
Growth Rate Start Year 
The year of the population data used as the start year (time 1) for calculating growth rates for a given country in GPWv4.10.
 
Growth Rate End Year
The year of the population data used as the end year (time 2) for calculating growth rates for a given country in GPWv4.10.
 
Growth Rate Admin Level
The administrative level at which the growth rate was calculated for a given country in GPWv4.10.
 
Year of Last Census
The year of the most recent census for a given country in GPWv4.10.
 
Average Size of Input Geography
The mean area (in square kilometers) of the admin unit(s) contributing population to a given raster cell in GPWv4.10. This quantitative surface indicates the size of the input unit(s) from which the population count and density rasters were created.