GeoNames geographical database
https://www.geonames.org/
Source: https://download.geonames.org/export/dump/
License: Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/

Derived catalogue: cities500.zip (population > 500 or administrative seats down to PPLA4), with admin1 labels. Fields compacted, partitioned by search names and sorted by population. This catalogue is broad, but does not guarantee every settlement or every Chinese translation.

Downloaded source SHA256:
{
  "cities500.zip": "46fd044a7e0d2d097daa96d9075c8c818e8b0e337bf58724a4f94637dd351ad2",
  "admin1CodesASCII.txt": "1da92a6323a5fec3176f3f743bf4cf4040fd56a876da55e46fbca23c863aa60a"
}