Methodology
Official Data Sources
All classification data is derived from official government sources. Refer to the original documents for authoritative information.
Official source files
- NAICS 2022 Structurehttps://www.census.gov/naics/2022NAICS/2022_NAICS_Structure.xlsx
- NAICS 2022 to 2017 Concordancehttps://www.census.gov/naics/concordances/2022_to_2017_NAICS.xlsx
- SBA Table of Size Standards (March 2023)https://www.sba.gov/size
- SEC SIC Code Listhttps://www.sec.gov/search-filings/standard-industrial-classification-sic-code-list
Method
This site mirrors official codes from Census, SEC, and SBA publications. Where mappings are derived, they are presented as reference aids rather than authoritative reinterpretations. Data is re-parsed from the original Excel workbooks using automated import scripts.
Last updated: Effective March 17, 2023 (SBA standards), NAICS 2022 final structure.