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Gridded Population of the World





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Gridded Population of the World, version 3 (GPWv3) and the Global Rural-Urban Mapping Project (GRUMP) are the latest developments in the rendering of human populations in a common geo-referenced framework, produced by the Center for International Earth Science Information Network (CIESIN) of the Earth Institute at Columbia University.

GPWv3 depicts the distribution of human population across the globe. It is the most detailed version of GPW to date with more than three times the amount of data as version 2, and includes population estimates to 2015. GRUMP builds on GPWv3 by incorporating urban and rural information, allowing new insights into urban population distribution and the global extents of human settlements.

Developed between 2003 and 2005, GPWv3 and GRUMP provide globally consistent and spatially explicit human population information and data for use in research, policy making, and communications. GRUMP is currently in its alpha edition. Check back in early 2006 for updates. For more information, please see the projects Description and History. We appreciate user feedback, including copies of published papers and maps that use our data; please review the data usage policy. For a list of the many individuals who contributed time, effort, and expertise to these data products, please see the Acknowledgments and Credits.

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CIESIN offers unrestricted access and use of data without charge, unless specified in the documentation for particular data. All other rights are reserved.


The Trustees of Columbia University in the City of New York and the Centro Internacional de Agricultura Tropical (CIAT) hold the copyright of this dataset.

Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from CIESIN or CIAT. Users should acknowledge CIESIN and CIAT as the source used in the creation of any reports, publications, new data sets, derived products, or services resulting from the use of this data set. CIESIN and CIAT also request reprints of any publications and notification of any redistributing efforts.


CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either express or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN.


This work, including access to the data and technical assistance, is provided by CIESIN, with funding from the National Aeronautics and Space Administration under Contract NAS5-03117 for the Continued Operation of the Socioeconomic Data and Applications Center (SEDAC).


See above for the appropriate citations.