Here are SBA's Table of Small Business Size Standards based on NAICS 2002.  HTML    PDF

NAICS 2002 was effective October 1, 2002 for SBA's Table of Small Business Size Standards.  This table includes the Office of Management and Budget's (OMB) January 1, 2002, modifications to the North American Industry Classification System (NAICS).  Together, NAICS and OMB's 2002 modifications are referred to as "NAICS 2002."  The size standards in this table apply to most of SBA's programs and to many other Federal Government programs and actions where eligibility as a small business is a factor or a consideration.

The U.S. Bureau of the Census offers crosswalk table on its NAICS 2002 web site for NAICS 2002 to NAICS 1997, NAICS 1997 to NAICS 2002, and NAICS 2002 to SIC 1997.

SBA provides a search tool to locate NAICS 2002 codes and their size standards, and also their original SIC codes.

For earlier tables of size standards, please see SBA's Historical Size Standard Information web page.