Q. How do I find a NAICS code?
The next-easiest thing is to go into the printed reference book that lists all the NAICS codes, shelved at REF HF1041.5 .N67 2012. The table of contents and index are very useful.
Nested lists of NAICS codes can be found on the NAICS section of the Census website, but the keyword search tool does not work very well or intuitively - it's usually easier to start with the printed book, if you weren't able to find the NAICS for a similar company on Hoover's.