2007 Economic Census

Definition Changes

Industry Classification Changes

The North American Industry Classification System (NAICS) is updated periodically. Changes are implemented during economic census years.

To confirm that data are comparable, data users need to review:

• the NAICS and Standard Industry Classification (SIC) correspondence tables and
• the Bridge Reports, which show the effect of industry classification changes between economic censuses. The 2007 Bridge Reports will be available June 2011.

Geographic Boundary Changes

Geography boundaries may change over time. The geographic areas covered by County Business Patterns and Nonemployer Statistics are benchmarked to the year of the last economic census.

To confirm that data are comparable, data users need to review:

• the GeoNotes file that document boundary and other geographic changes from the prior economic census in a textual format and
• the Geographic Reference Files that document additional coding system changes.

Data Field Changes

Data field names and definitions may change over time.

To confirm that data are comparable, data users need to review:

• the data field definitions. Click on the data field name to get the definition.