United States · Business classification
NAICS code lookup for the U.S.
Search the complete 2022 U.S. NAICS structure by activity or code, drill from sector to six-digit industry, and inspect the historical SIC crosswalk when one is available.
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U.S. and Canadian NAICS are related, not interchangeable
NAICS was developed jointly by the United States, Canada, and Mexico. The first two digits are designed for trilateral comparability, but national detail can differ. This page uses the U.S. Census Bureau’s 2022 U.S. structure. For a Canadian filing, use the NAICS Canada 2022 lookup (Statistics Canada) instead of copying a U.S. six-digit code.
What the SIC links mean
The SIC links are a historical 2002 NAICS to 1987 SIC concordance published by the Census Bureau. A business can map to more than one SIC relationship, and the crosswalk is not a current replacement for an agency’s classification rule.