Welcome to NAICS Association! Your Home for all things NAICS and SIC.

NAICS Services

Accurate Data. Actionable Intelligence. Custom Solutions.

Data Appends Quickly and Effectively add NAICS, SIC and other Company Information to an Existing Database of Businesses. (Great for Research, Marketing, Compliance and Customer Retention Efforts).

Targeted Business Lists Use NAICS or SIC Codes to create a List of Companies in specific Industries that you can Target your Marketing to.

NAICS & SIC Identification Tools Use our NAICS Search Tools, NAICS & SIC Crosswalks, Drill Down Tables and more.

Company Lookup Tool Perform Individual Lookups on over 19 Million U.S. Businesses to Identify: NAICS Codes, SIC Codes, DUNS Numbers, Company Size Information and Much More.
Click to View a Sample Record

NAICS & SIC Manuals and Reference Files Get the Current NAICS & SIC Code Manuals. We also provide online NAICS & SIC Reference Files for immediate download.

Data Enhancement

Database Enhancement Solutions

Solutions for As-Needed Data Maintenance:

Data Appends Add Vital Information to your Business Database including NAICS/SIC Codes, Address, Contact Info, Company Size, Email, URL and More! See all of our Standard Record Layouts and Single Data Elements for more details.

U.S. Company Lookup Tool- Only need Company information occasionally? Use our Company Lookup Service to acquire records as the need arises.

Cloud Solutions for Ongoing Data Maintenance:

Data Enhancement API- Integrate our Business Intelligence API to seamlessly append Vital data to your Customer Acquisition Efforts.

Global-Batch Data Match- Subscribe to our Automated Batch Service to routinely Append Essential Information to both your Domestic and International Business Records.

Targeted Marketing Lists

Targeted Marketing Lists

Targeted Business Lists The NAICS Association can provide Mission-Critical Information, Customized to meet your specific needs, with Pricing that will make your day!

Business E-mail Lists Our Marketing Experts can help you customize your lists by Industry, Annual Sales or # of Employees, Geography, NAICS/SIC Codes, and many other popular selects.

Prospecting Lists NAICS Association can provide you with Prospecting Lists for over 80 million B2B and B2C companies throughout the world.

Market Sizing

Market Sizing & Industry Research

Counts by Company Size, Industry & Geography Counts by NAICS and SIC Industry Sectors, Company Size, State, MSA & Country. Full Tables Free to View!

Market Analysis Profiles Three Market Analysis Profile Spreadsheets Available for Immediate Download. Profiles include Six-Digit NAICS Counts by Annual Sales, Total Employees, and Employees on Site.

Market Research Reference Tools A NAICS Association Recommended Guide to Free Online Market Research Tools Online.

Free Whitepaper Downloads Learn How to Use NAICS & SIC Codes for Marketing and How to Clone Your Best Customers for B2B Marketing Success.

NAICS Knowledge

NAICS Knowledge

History of NAICS Everything you need to know and more about the history of the NAICS code.

NAICS FAQ Frequently Asked Questions

NAICS Lookup Help Having trouble identifying your NAICS Code with the tools provided? Find your answers here.

High Risk NAICS Codes This list has been compiled through cooperative association with banking professionals as a working guideline only.

SBA Size Standards U. S. Small Business Administration Table of Small Business Size Standards Matched to North American Industry Classification System (NAICS) Codes.

Identify Company NAICS or SIC Codes One of 3 Ways:
1. Company Lookup Tool

Want to see the NAICS Codes, SIC Codes, Company Size Information and More on U.S. Companies? Use and Subscribe to our Searchable Business Database for Immediate Results.

2. NAICS Identification Tools

Use our Best in Class Tools for Industry Identification. Including: NAICS Keyword Search, NAICS & SIC Drill Down Tables and NAICS to SIC Crosswalks to Properly Identify Industry Codes.

3. Data Append Services

Append NAICS Codes, SIC Codes & Other Valuable Firmographic Data with One-Time Data Appends or Ongoing Data Solutions including our new Business Intelligence API.


Turn Your E-mail List Purchase from NAICS into a High-Value Opt-in List with CLiCKback.

Use Clickback Lead Gen Edition to attract more leads. It uses ELG (Email Lead Generation) software that enables B2B companies to turn non permission-based contacts or purchased data into permission-based leads.

You’re looking for a constant flow of qualified leads to fill your funnel, and Marketing Automation and Email Service Provider software are not optimized for you to send email campaigns to your non permission-based contacts for lead generation. Generate quality B2B leads today with ClickBack‘s smart, safe and integrated ELG software solutions.

Learn More About Email Lead Generation

See a Complete List of Business Resources
The NAICS Association offers Free & Paid Resources for Businesses of All Sizes. Perform Market Research, Build Lists, Append Data, Navigate Business Information & More.