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The Census Bureau packages data and information into easy-to-understand visuals.
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Read research analyses from Census Bureau experts.
Developer portal to access services and documentation for the Census Bureau's APIs.
Explore Census Bureau data on your mobile device with interactive tools.
Find a multitude of DVDs, CDs and publications in print by topic.
These external sites provide more data.
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Explore Census data with interactive visualizations covering a broad range of topics.
How we provide the best mix of timeliness, relevancy, quality, and cost for the data we collect.
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Explore the rich historical background of an organization with roots almost as old as the nation.
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The Census Bureau's Director writes on how we measure America's people, places and economy.
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The following tables provide detailed descriptions of the direct relationships between classification systems.
2012 NAICS to 2007 NAICS [XLS, 172KB]
2012 NAICS to ISIC Rev. 4 [XLS, 329KB]
|2007 NAICS to 2012 NAICS [XLS, 167KB]
2007 NAICS to 2002 NAICS [XLS, 158KB]
2007 NAICS to ISIC Rev. 4 [XLS, 338KB]
2002 NAICS to 2007 NAICS [XLS, 158KB]
2002 NAICS to 1997 NAICS [XLS, 1.3MB]
2002 NAICS to 1987 SIC [XLS, 397KB]
2002 NAICS to ISIC Rev. 3.1 [XLS, 416KB]
2002 NAICS to NACE Rev. 1.1 [XLS, 460KB]
1997 NAICS to 2002 NAICS [XLS, 1.3MB]
1997 NAICS to 1987 SIC [XLS, 358KB]
|1987 SIC to 2002 NAICS [XLS, 397KB]
1987 SIC to 1997 NAICS [XLS, 359KB]