Social Science Data Services
Introduction | By Country | By Commodity | U.S. | Historical | Surveys | Classifications
Two Classification Codes
Sources for trade statistics use one or more standard classification codes to group commodities and products.
How the Codes Work
SITC and HS categorize products in standard nomenclature within a numerical hierarchy. In either code, the level of product detail is indicated by digit level within the classification hierarchy. Two-digit product breakdowns are very general while products expressed at five-digits are quite detailed. For example, in HS:
Links Between Classifications
many sources now use HS, some also continue to report in SITC.
This can be helpful for research requiring time depth, because
statistics reported in one classification code may not be readily
comparable with those of another.
Indexes to Trade Classification Codes
Trade classification indexes are used to look up:
Indexes for SITC available at Dewey Library:
Index for HS available at Dewey Library:
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