Small Business Series: The Top Ten NAICS Codes Used by the Federal Government

The NAICS (North American Industry Classification System) codes used in government contracting can vary depending on the specific agency, procurement program, or contract type. While it is important to use the correct NAICS codes for your business, there are several NAICS codes that are commonly used in government contracting across different agencies and industries.

Here are some of the most commonly used NAICS codes in government contracting:

1. NAICS 541511 - Custom Computer Programming Services: This code is used for contracts related to software development, programming, and IT consulting services.

2. NAICS 541330 - Engineering Services: This code is used for contracts related to engineering services, such as consulting, design, and testing.

3. NAICS 561210 - Facilities Support Services: This code is used for contracts related to facilities management, maintenance, and repair.

4. NAICS 541512 - Computer Systems Design Services: This code is used for contracts related to the design and development of computer systems, networks, and software applications.

5. NAICS 541519 - Other Computer Related Services: This code is used for contracts related to a variety of computer-related services, including data processing, hosting, and web design.

6. NAICS 621111 - Offices of Physicians (except Mental Health Specialists): This code is used for contracts related to medical and healthcare services, such as primary care and specialist services.

7. NAICS 561720 - Janitorial Services: This code is used for contracts related to cleaning and maintenance services for commercial buildings.

8. NAICS 541618 - Other Management Consulting Services: This code is used for contracts related to management consulting services, such as strategic planning, organizational development, and project management.

9. NAICS 541611 - Administrative Management and General Management Consulting Services: This code is used for contracts related to consulting services focused on business operations and management.

10. NAICS 541712 - Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology): This code is used for contracts related to scientific research and development in fields such as engineering, physics, and chemistry.

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