GeoNames Forum

We are currently importing data for cities in Germany from: https://www.geonames.org/premiumdata/202406/DE.zip.

In addition, we'd like to import postal codes for the country. Initially, we tried using the alternate name file, but found it contained a very limited number of postal codes.

We then explored using the postal codes export, but discovered that it only includes admin codes 1, 2, and 3 for Germany. To properly match the postal codes with the cities, we require the 4th admin code. Is there a method for us to accomplish this mapping?