THERE IS A HIGH PROBABILITY THAT THE DATA YOU ARE LOOKING FOR ARE NOT HERE.
THE SPATIAL, OCCUPATION, AND POPULATION REFERENCE FILES HAVE BEEN MOVED TO https://github.com/PHSKC-APDE/rads.data. Installing that package will allow you to pull reference data with a single line of code. If you've already installed rads, you have rads.data on your machine. If you want to work directly with the CSV files, go to the inst/extdata folders in the rads.data repo.
This respository contains useful code and reference lists that span multiple other repositories/projects used by Public Health—Seattle & King County. See readme files in subfolders for more detailed descriptions of each reference file.
Nowadays, this primarily contains the code used for creating the address reference table. See that subfolder for more information. There are also some tables related to claims CCW and CCS information.