Corporate Entity Classification Database Downloads
Download official 2022 NAICS industry classifications, legacy 1987 SIC crosswalk concordance tables, SBA small business size standards, and IRS Schedule C Principal Business Activity (PBA) codes in clean CSV and JSON formats. Sourced directly from public-domain U.S. government manuals and free for commercial use.
Direct Public Downloads (Ungated)
Instant direct access to our core reference datasets. Zero email required, 100% public domain (CC0).
NAICS 2022 ↔ SIC 1987 Concordance
Direct mapping between 1,012 six-digit NAICS 2022 codes and 1,004 legacy 4-digit SIC codes.
SBA Small Business Size Standards
Complete table of 13 CFR Part 121 receipt and employee thresholds per NAICS code.
SIC-NAICS Translation Gap Study
Analytical dataset comparing split vs one-to-one mapping paths across historical revisions.
Most Common Business Types
B2B classification mapping for top 279 commercial trades and service categories.
Open Data API Manifest
Machine-readable API manifest and OpenAPI 3.0 static schema definition.
Download Unified NAICS + SIC + SBA + IRS Master Concordance
Get our consolidated master CSV combining NAICS 2022 (1,012 codes), legacy SIC (1,004 codes), SBA small business size standards (receipts/employees), IRS Schedule C PBA tax codes, and U.S. Census establishment counts into a single spreadsheet.
Licensing & Provenance
All primary industry classification manuals and size standards on entitycodes.org are compiled from public-domain U.S. government sources (U.S. Census Bureau, Small Business Administration, Internal Revenue Service, and Defense Logistics Agency). Data is provided under Creative Commons CC0 / Public Domain dedication. Attribution to entitycodes.org is appreciated when embedding or redistributing.