How do I look up a Company’s NAICS Code?

To identify the proper code for your company, use the NAICS SEARCH TOOLS to identify the code that best reflects your primary business activity (revenue projections activity.)


What is your NAICS?

It should be a button that explains what it it. Back on the form, they should be able to search and then that should be populated as they proceed. They should also be able to look up SIC (optionally). If international ISIN code can be determined later.


Does My Business have a NAICS Code?

Yes. As long as you have a business you must have a business activity. Your code merely describes your Primary and Secondary Income-Producing Lines of business.


Can I use more than one code?

Yes. Most businesses have more than one revenue-producing line of business.


Do we have to Register with NAICS Association?

No! We are just here to help you determine the best code for your business using our online tools, as well as to provide effective Targeted Marketing Lists and mission-critical Data-Appends to your Customer Databases.


How Do I use the Online Tools?

The Keyword Search allows you to put in a single keyword such as “Restaurant” or “Plumbing”, “Computers” or “Consulting”, and returns all codes that contain that word in the title or in the description. Look through the results and you should find the answer. Whether you are a wholesaler of plumbing parts or are an actual plumbing company a keyword search on the term “Plumbing” will get you to the appropriate code. The Industry Drill-Down table allows you to hone in on Wider Industry Categories such as “Construction” or “Manufacturing” to find all of the full six digit codes that fall within that Industry. Identify the code that appears closest to your line of business and you are finished.


What if I still can’t find my code?

Contact the Census Bureau! They are the official US Government Authority who manages the NAICS Coding System. Go to and at the top highlight “Business” and click on “NAICS”. They have a section called “Ask Dr. NAICS” at that location. You can Call or E-mail them with your questions. *Please don’t Call or E-mail NAICS Association requesting help with a code! We receive hundreds of calls daily and simply cannot make the code determination for you. The Census Bureau is the authority in these matters!


How do I find my SIC Code, or, I have my SIC Code, how do I find my NAICS Code?

We offer Cross-References – both SIC to NAICS and NAICS to SIC, on the NAICS and SIC Crosswalk Page which enables you to cross over from one coding system to the other. If you can find one code you can obtain the other. TIP: If you are an existing business use our new US Company Lookup Tool to Download your Company’s D&B Marketing Record. It contains the NAICS Code that D&B has listed for your Company.  Learn More button should be available for NAICS Code and SICs codes. We are also going to set up another rating system.