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Build a targeted business list or email list by industry, location, company size, and contact role. We help define the right SIC and NAICS scope before delivery.
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Free NAICS & SIC Code Lookup
Find Any NAICS or SIC Code
Look up industry codes, confirm the right code for your business, find companies by industry, or add codes to your own data.
Industry codes describe what a business does. SICCODE.com helps you search codes, build targeted business lists, and classify customer or supplier data.
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Add Codes to My Data
Send us your customer, supplier, or CRM file and we return it with accurate NAICS and SIC codes for segmentation, compliance, analytics, and reporting.
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Not sure which NAICS or SIC code fits your business? Have a classification analyst confirm the right code before an important filing, loan, contract, insurance review, or internal record.
Confirm My Code →Where industry codes show up
NAICS and SIC codes are used across government forms, financial reviews, insurance records, research, and sales targeting.
SAM.gov
Federal contractors use NAICS codes during registration, bidding, and opportunity matching.
Tax & business forms
Industry codes help describe your primary business activity on official forms.
Loans & SBA reviews
Lenders and agencies may compare businesses by industry, size, activity, and revenue.
Insurance
Classification can help insurers understand business operations and expected risk patterns.
Prospecting
Sales and marketing teams use codes to find companies in specific industries and locations.
Since 1998
Classifying U.S. businesses through multiple NAICS revisions.
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Business records organized by industry classification.
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What are NAICS and SIC codes?
NAICS and SIC codes are short numbers that describe what a business does. A plumber, software company, bakery, manufacturer, retailer, and insurance agency each belong to different industry categories.
NAICS is the newer six-digit system used by many government and business systems. SIC is the older four-digit system that remains common in databases, credit files, business lists, and market research.
Need to convert between SIC and NAICS?
Many businesses, agencies, and databases still use both systems. Use the SIC to NAICS crosswalk to compare related codes and understand how older SIC categories map to newer NAICS classifications.
Convert SIC ↔ NAICS →Frequently asked questions
Basic answers for business owners, researchers, and teams using industry codes.
Is it free to look up a NAICS or SIC code?
Yes. You can search NAICS and SIC codes on SICCODE.com for free. Paid services are available when you need expert code confirmation, targeted business lists, email lists, code appending, or enterprise data access.
What is the difference between NAICS and SIC?
NAICS is the newer six-digit industry classification system. SIC is the older four-digit system that remains common in business databases, market research, credit files, and legacy records.
How do I find the right code for my business?
Start by searching for your main business activity, product, or service. If several codes seem close, compare the definitions, examples, and exclusions. If the code will be used for an important filing, contract, loan, or compliance review, expert confirmation may be helpful.
Can a business have more than one industry code?
Yes. A company may operate in more than one activity, location, or line of business. For many forms, the best code is the one that describes the primary revenue-producing activity.
Can SICCODE.com help me find companies in a specific industry?
Yes. SICCODE.com provides targeted business lists and email lists by industry, location, company size, and contact role. We help define the right SIC and NAICS scope before delivery.
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