Added 2020 census centroids!
Minor corrections to documentation.
Update to fix character encoding issue, which broke a handful of accented characters in the COUNAME column of county2010 and county2000
Improved README
Initial release of this data package. Data on the centers of population of various census areas in the United States according to the US Census Bureau. Downloaded from https://www.census.gov/geographies/reference-files/time-series/geo/centers-population.html