What are the 21 subject classes of the Library of Congress classification scheme?
Daniel Johnson
Published Mar 08, 2026
What are the 21 subject classes of the Library of Congress classification scheme?
There are 41 printed volumes of individual classification schedules for the main classes and subclasses of LCC….Main Classes.
| TWENTY-ONE MAIN CLASSES OF LCC | |
|---|---|
| A | General Works |
| F | History of the Americas |
| G | Geography. Anthropology. Recreation |
| H | Social Sciences |
How do we classify the Library of Congress?
The Library arranges its collections of books and bound periodicals according to the Library of Congress Classification Scheme. Each book has a class mark consisting of letters and numbers which indicate its subject and determine where it is filed on the shelf. The first letter represents the broad subject.
How do Library of Congress classify books?
Books are arranged in order of the LoC number, alphabetically first and then by number. Books with the same LoC number are then arranged by author’s name, and then by year. LoC letters are assigned to different subjects, and those subjects are further divided into two letters, and then into numbers.
What are the 4 classification groups of a library?
The most common systems in English-speaking countries are:
- Dewey Decimal Classification (DDC)
- Library of Congress Classification (LCC)
- Colon classification (CC)
- Universal Decimal Classification (UDC)
What is the Library of Congress classification?
The Library of Congress Classification (LCC) is a classification system that was first developed in the late nineteenth and early twentieth centuries to organize and arrange the book collections of the Library of Congress.
What are two main library classification schemes?
The two main library classification systems are the Dewey Decimal system and the Library of Congress system. Both are expandable tools for sorting books into categories, but they differ in how they categorize books and in the sorts of libraries that use them.
How do you classify books in the library?
Libraries in the United States generally use either the Library of Congress Classification System (LC) or the Dewey Decimal Classification System to organize their books. Most academic libraries use LC, and most public libraries and K-12 school libraries use Dewey.
What libraries use Library of Congress classification?
From the Online Catalog to the Shelf Libraries in the United States generally use either the Library of Congress Classification System (LC) or the Dewey Decimal Classification System to organize their books. Most academic libraries use LC, and most public libraries and K-12 school libraries use Dewey.
What are the two types of library classification system?
The two main library classification systems are the Dewey Decimal system and the Library of Congress system.
What is library material classification?
Some of the popular classification systems are the Library of Congress Classification (LCC), the Dewey Decimal Classification (DDC) the Bliss Bibliographic Classification (BC), the Universal Decimal Classification (UDC), Cutter Expansive Classification, and the Colon Classification (CC); DDC and LCC being the most …
How many main classes are found in the Library of Congress classification system?
twenty
The system divides all knowledge into twenty-one basic classes, each identified by a single letter of the alphabet.
