The Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11 consists of estimates of human population density (number of persons per square kilometer) based on counts consistent with national censuses and population registers, for the years 2000, 2005, 2010, 2015, and 2020. A proportional allocation gridding algorithm, utilizing approximately 13.5 million national and sub-national administrative units, was used to assign population counts to 30 arc-second grid cells.
1) At administrative level 1 these tables do not refer to the National Capital District or to the Autonomous Region of Bougainville. The National Capital District is combined with the Central Province and Bougainville is combined with the North Solomons province.
In urban areas, responsibility for providing piped water and sewerage services in the nation’s capital, Port Moresby, lies with Eda Ranu, and for the remaining provincial and district towns with Water PNG (formerly the PNG Water Board). Service provision to these areas are estimated to be 89% access to safe water (little change from 87% in 1990), and 57% access to safe sanitation (down from 89% in 1990)1. Access to services in urban areas struggle to keep up in the face of rapid urban population expansion.