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CLOSED MEMORIAL DAY: All W-TCPL locations will be closed on Monday, May 25, for Memorial Day.

Dewey Decimal Classification System

The Dewey Decimal Classification System is the world's most widely used library classification system. It divides all the world's knowledge into 10 major categories, from 000 to 999.

Each of the 10 major Dewey classes, listed below, has 10 divisions. These are further divided - the more numbers, the more specific the subject. In this way, the Dewey system progresses from the general to the specific. The decimal point is used to make items even more specific.

Books with numbers that begin with a "J" will be found in the Juvenile Room.

If you have any questions when looking for items in the library, we encourage you to ask the library staff for assistance. We're here to help!


Numbers Classification What to Look For
000-099 Computer Science: Information & General Works Journalism, News Media, Computer Programming, Internet
100-199 Philosophy & Psychology Space, Time, Dreams, Paranormal
200-299 Religion Good & Evil, Humanities, God, Theology, Mythology
300-399 Social Sciences Family Life, Finance, Law, Military, Civil Service Test, Etiquette, Education, True Crime, Social Problems, Folklore
400-499 Language Languages & Dictionaries
500-599 Natural Sciences & Mathematics Natural Science, Math, Chemistry, Physics, Biology, Zoology
600-699 Technology
(Applied Sciences)
Technology, Inventions, Engineering, Medicine, Health, Fitness, Agriculture, Pets, Gardening, Home Economics, Child Rearing, Cookbooks, Business, Accounting, Manufacturing, Automotive Repair,  Woodworking
700-799 Arts & Recreation The Arts, Music, Dramatic Art, Performing Art, Sports, Photography, Art History, Crafts, Collectibles
800-899 Literature & Rhetoric Poetry, Letters, Essays, Plays, Humor, Speeches, English Literature, Style Manuals, Shakespeare
900-999 History & Geography World History, American History, Geography, Ancient History, Travel, World War I, World War II, Asian History, African History
92A - 92Z Biography Biographies


For a more detailed list of "What to Look For" follow this link!


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