Population data as grid

Question

I'm looking for world/europe/switzerland population data with a grid format. For example, 1km squares and then the population in that gridpoint.

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I found one source, http://www.diva-gis.org/gdata

Subject: Population

Description: Population density (old)

Source: CIESIN, 2000. Global gridded population database

Format: Grid

Resolution: 30 seconds

But I'd like to know if there is anything more updated, and perhaps different file/db formats. The above source file format is:

Vector data are stored as ESRI shapefiles Grid (raster) data are stored as DIVA gridfiles

That site's file format docs are down, but here's an archive.

Answer 1

From NASA's Socioeconomic Data and Applications Center (SEDAC), I found this dataset: Gridded Population of the World (GPW), v4.

Resolution:

• 30 arc-second (approx 1 km) native resolution, which is aggregated to four lower resolutions:
• 2.5 arc-minute (approx 5 km)
• 15 arc-minute (approx 30 km)
• 30 arc-minute (approx 55 km)
• 1 degree (approx 110 km)

Date:

• Population input data are collected at the most detailed spatial resolution available from the results of the 2010 round of Population and Housing Censuses, which occurred between 2005 and 2014.

• All estimates of population counts and population density have also been nationally adjusted to population totals from the United Nation’s World Population Prospects: The 2015 Revision

• The input data are extrapolated to produce population estimates for the years 2000, 2005, 2010, 2015, and 2020.

Format:

The raster data sets are now available in ASCII (text) format as well as in GeoTIFF format. Five of the eight raster data sets are also available in netCDF format

Data License:

licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0)

Answer 2

You can get data like this at WorldPop. They have 100M data for individual countries and 1km data for the continents. The data are provided as a tif file.