About the data
The team at Global Human Settlement Layer
made the map of 1km squares, with data collated from around the world by
NASA.
Most of the populations are projected forward to 2020 from national censuses. Many of the original data is from around
2010
, and so is starting to lose accuracy in fast growing areas. NASA are updating their data in Spring of 2024, and hopefully GHSL will not be far behind.
For Australia I’ve overcome this by using the ABS’s 2022
km grid
, which is far more accurate for Melbourne and Sydney’s fast growing outer suburbs.
For more information about the data, read my substack post.
Report an error
What appears to be wrong? Have a look at the map and try and figure out what the source of the error is.
Do some squares in the 1km square map have more or fewer people than you expect? If so, we'll have to wait for a new GHSL to fix it.
Does a city seem to be in the wrong place? That can be fixed. Often there is no official record of where the center of a city is, but locals tend to know. If you would like me to move a city-center then please enter in the city below.
Please also check the city's geoname ID (it's in the URL when you fid the right city on geonames.org) and provide a correct one if necessary.
If several votes are received then I'll update the center.
If you have any other errors to report you can create an issue on GitHub.
