This web site uses data from GeoNames.org. The data is licensed under the Creative Commons Attribution 3.0 License.
The text of the license is reproduced here:
This work is licensed under a Creative Commons Attribution 3.0 License, see http://creativecommons.org/licenses/by/3.0/
The Data is provided "as is" without warranty or any representation of accuracy, timeliness or completeness.
License text quoted from: http://download.geonames.org/export/dump/readme.txt
For more information about GeoNames.org, see the GeoNames blog: https://geonames.wordpress.com/about/