US geographic names 2017-06-01

A text database of named places in the United States.
The US Board on Geographic Names controls the database of official names of places in the US, and the US Geological Survey (USGS) maintains the database. This is a copy of the 2017-06-01 database, which I am using to create an R package for textual analyses of geographic content, to ensure this version remains. The original source was from: https://geonames.usgs.gov/domestic/download_data.htm (which is a very slow server).
I have chosen CC0 for the license because, as a creation of the US government, I don't think the database can be copyrighted (and CC0 is the closest match).