This repository stores various government data crosswalks, so that people can download them. These files will be updated if the government updates a crosswalk.
The file titles are listed below, and are attributed based on the source (if there is a URL attached)
https://nces.ed.gov/ipeds/cipcode/resources.aspx?y=55
Standard Occupational Classification (SOC) to Dictionary of Occupational Titles (DOT) (HT CJ Libassi)
https://www2.ed.gov/rschstat/eval/rehab/support/doc-soc.xls
These come from the 2010 census and link up US state FIPS codes to their abbreviations and their names. The county file links the state and county FIPS to the state and county names.
https://www.census.gov/eos/www/naics/downloadables/downloadables.html