How does NAICS compare to the SIC?
There are some differences between the 1997 NAICS and the 1987 SIC, but much of the layout is similar. The user is able to obtain data for more than two thirds of all 4-digit SICs from the new 6-digit NAICS. Either the new NAICS industries are subdivisions of the old SIC industries or the industry definitions have not changed. However, there are some very basic differences between the two. The SIC had only 9 divisions, while the NAICS has 20 sectors. Some of the NAICS sectors were created by splitting SIC divisions. The NAICS includes advanced technologies and new and emerging industries, which the SIC did not. For example, the NAICS has an information sector not included in the SIC. There is a crosswalk that shows the relationship between SIC and NAICS. This crosswalk is available at http://www.census.gov/epcd/ec97brdg/index.html. If you are interested in a crosswalk showing the relationship between 1990 Census Codes, 2000 Census Codes, and the 1997 NAICS, it is available at http://ww
