| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 921120 | 921120 | 921120 | Advisory commissions, legislative | |||
| 921120 | 921120 | 921120 | Boards of supervisors, county and local | |||
| 921120 | 921120 | 921120 | City and town councils | |||
| 921120 | 921120 | 921120 | Congress of the United States | |||
| 921120 | 921120 | 921120 | County commissioners | |||
| 921120 | 921120 | 921120 | Legislative assemblies | |||
| 921120 | 921120 | 921120 | Legislative bodies (e.g., federal, local, and state) | |||
| 921120 | 921120 | 921120 | Legislative commissions | |||
| 921120 | 921120 | 921120 | Study commissions, legislative |