NAICS Code Lookup

Find the industry classification codes your business needs for federal contracting and certification applications

204 industry codes with SBA size standards

What are NAICS codes?

NAICS (North American Industry Classification System) codes are 6-digit numbers that classify businesses by industry for federal statistics and contracting.

Why do I need them?

NAICS codes are required for SAM.gov registration, federal contracting, SBA size standard determination, and many certification applications.

SBA Size Standards

Each NAICS code has an SBA size standard (employees or revenue) that determines if your business qualifies as "small" for federal programs.

Browse by Industry Sector

Click a sector to explore its subsectors and industry codes

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