January 27, 2022

Updated Statistics About the Dewey Decimal Classification (DDC)

A post today on 025.431: The Dewey Blog from the DDC team at OCLC (publishers of the classification) included a chart with some updated statistics (as of September 1, 2015) about, “the database associated with the English-language version of DDC 23.”

For example:

  • 40,181 Explicit Numbers in the DDC Schedules
  • 12,195 Facets
  • 103,146 Relative Terms


The complete chart with more numbers is available here.

See Also: Live Demo: Classify, an Experimental Classification Web Service From OCLC Research

About Gary Price

Gary Price (gprice@mediasourceinc.com) is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at Ask.com, and is currently a contributing editor at Search Engine Land.