What is a NAICS code?

A NAICS code (North American Industry Classification System) is a 2-to-6 digit number used by US federal agencies to classify businesses by industry. It is required for SAM.gov registration, federal bids, and many state procurements.

Which NAICS edition does this tool use?

We use the official 2022 NAICS edition published by the US Census Bureau — the version currently in force for SAM.gov, federal contracting, and most agency systems.

How do I pick the right NAICS code?

Search by the keyword that best describes your primary revenue activity, then pick the most specific (6-digit) code that matches. You can list multiple NAICS codes on SAM.gov, but one must be designated as primary.

Is this related to NIGP or PSC codes?

No — NAICS is the federal industry standard. NIGP codes are used by many state and local governments, and PSC codes are used inside federal contracts to classify the product or service being purchased. Use our PSC Code Lookup for that.

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NAICS Code Lookup

Search the full 2022 NAICS code list by code or keyword. Find your industry classification in seconds.

100% free — no signup required

Select a code to see its full sector hierarchy and related industry codes.

How it works

1Type a 2–6 digit NAICS code or any keyword describing your business.
2Browse matching industries from the official 2022 NAICS list.
3Click a result to see its full hierarchy, sector, and related codes.

Why it matters

Picking the wrong NAICS code locks you out of bids you should be winning. Federal agencies use NAICS to set small business size standards — a single-digit slip can move you from "small" to "other than small" and disqualify you from set-aside opportunities.

This lookup uses the full 2022 NAICS edition published by the US Census Bureau (2,125 codes total). It's the same list SAM.gov, the SBA, and federal contracting officers reference.

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