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The largest public library is the Library of Congress in Washington, D.C. (the de facto national library of the United States), with 32,818,014 volumes.[2] The largest academic library is the Harvard University Library, with 16,250,117 volumes.[3] The largest library outside of the continental United States is the Hawaii State Public Library System, the statewide public library system of Hawaii, with 3,664,347 volumes,[4] while the largest academic library outside the continental United States is the University of Hawaii at Manoa Library, with 3,533,671 volumes.[3]

Number↓ Institution↓ Volumes↓ Type↓ Administration↓
1 Library of Congress 32,818,014 Public United States Congress
2 Boston Public Library 23,595,895 Public City of Boston[5]
3 Harvard University Library 16,250,117 Academic Harvard University
4 New York Public Library 15,348,427 Public Private Non-profit with majority of funding from city government.[7]
5 Yale University Library 12,519,514 Academic Yale University
6 University of Illinois at Urbana–Champaign Library 11,686,060 Academic University of Illinois at Urbana–Champaign
7 University of California, Berkeley Libraries 11,087,687 Academic University of California, Berkeley
8 Columbia University Libraries 10,296,816 Academic Columbia University
9 University of Texas Libraries 9,447,434 Academic University of Texas at Austin
10 Public Library of Cincinnati and Hamilton County 9,261,259 Public Hamilton County, Ohio[8]
11 University of Michigan Library 9,175,102 Academic University of Michigan
12 Indiana University Libraries 8,723,253 Academic Indiana University Bloomington
13 University of Chicago Library 8,597,159 Academic University of Chicago
14 Stanford University Libraries and Academic Information Resources 8,500,000 Academic Stanford University
15 University of California, Los Angeles Library 8,393,910 Academic University of California, Los Angeles
16 Cornell University Library 8,141,781 Academic Cornell University
17 University of Wisconsin–Madison Libraries 8,059,335 Academic University of Wisconsin–Madison
18 County of Los Angeles Public Library 7,488,196 Public Los Angeles County, California[9]
19 University of Washington Libraries 7,409,221 Academic University of Washington
20 Detroit Public Library 7,366,782 Public "Independent municipal corporation" with library commissioners
appointed by the Detroit Public Schools Board of Education.[10]
21 Princeton University Library 6,941,254 Academic Princeton University
22 University of Minnesota Libraries 6,877,699 Academic University of Minnesota
23 Queens Borough Public Library 6,609,444 Public Autonomous, with trustees appointed by city officials
and majority of funding from city government.[11]
24 University of North Carolina at Chapel Hill Library 6,526,824 Academic University of North Carolina at Chapel Hill
25 Ohio State University Libraries 6,285,446 Academic Ohio State University
26 Los Angeles Public Library 6,219,060 Public City of Los Angeles[12]
27 University of Pennsylvania Libraries 6,096,592 Academic University of Pennsylvania
28 Duke University Libraries 5,950,442 Academic Duke University
29 University of Arizona Libraries 5,722,280 Academic University of Arizona
30 Chicago Public Library 5,721,334 Public City of Chicago[13]
31 University of Pittsburgh Library System 5,657,403 Academic University of Pittsburgh
32 University of Virginia Library 5,532,266 Academic University of Virginia
33 Dallas Public Library 5,462,742 Public
34 Pennsylvania State University Libraries 5,354,645 Academic Pennsylvania State University
35 University of Oklahoma Libraries 5,299,924 Academic University of Oklahoma
36 New York University Libraries 5,073,286 Academic New York University
37 Michigan State University Libraries 4,994,033 Academic Michigan State University
38 University of Iowa Libraries 4,949,636 Academic University of Iowa
39 Hennepin County Library 4,927,693 Public
40 Northwestern University Library 4,842,949 Academic Northwestern University
41 Free Library of Philadelphia 4,642,094 Public
42 University of Georgia Libraries 4,637,291 Academic University of Georgia
43 Cleveland Public Library 4,635,819 Public
44 Rutgers University Libraries 4,529,396 Academic Rutgers University
45 Arizona State University Libraries 4,422,239 Academic Arizona State University
46 University of Florida George A. Smathers Libraries 4,288,118 Academic University of Florida
47 University of Kansas Libraries 4,235,542 Academic University of Kansas
48 Washington University Libraries 4,224,113 Academic Washington University in St. Louis
49 Miami-Dade Public Library System 4,199,940 Public Miami-Dade County, Florida
50 University of Southern California Libraries 4,084,284 Academic University of Southern California
51 Louisiana State University Libraries 4,082,803 Academic Louisiana State University
52 Brigham Young University Harold B. Lee Library 4,080,079 Academic Brigham Young University
53 Brooklyn Public Library 4,019,226 Public Independent nonprofit, with majority of trustees appointed
by city officials and majority of funding by city government.[14]
54 North Carolina State University Libraries 3,981,278 Academic North Carolina State University
55 Houston Public Library 3,951,035 Public City of Houston[15]
56 Texas A&M University Libraries 3,933,535 Academic Texas A&M University
57 University of Colorado at Boulder Libraries 3,928,431 Academic University of Colorado at Boulder
58 University of Connecticut Libraries 3,919,423 Academic University of Connecticut
59 Brown University Library 3,825,413 Academic Brown University
60 Johns Hopkins University Libraries 3,740,029 Academic Johns Hopkins University
61 State University of New York at Buffalo Libraries 3,720,113 Academic University at Buffalo, The State University of New York
62 University of Kentucky Libraries 3,719,548 Academic University of Kentucky
63 King County Library System 3,717,571 Public King County, Washington[16]
64 University of Maryland Libraries 3,716,860 Academic University of Maryland, College Park
65 University of Rochester Libraries 3,701,241 Academic University of Rochester
66 University of California, Davis Library 3,683,867 Academic University of California, Davis
67 Hawaii State Public Library System 3,664,347 Public State of Hawaii
68 Wayne State University Libraries 3,660,642 Academic Wayne State University
69 San Diego Public Library 3,645,389 Public City of San Diego[17]
70 University of Cincinnati Libraries 3,631,658 Academic University of Cincinnati
71 University of South Carolina Libraries 3,629,954 Academic University of South Carolina
72 University of Massachusetts Amherst Libraries 3,578,753 Academic University of Massachusetts Amherst
73 University of Hawaii at Manoa Library 3,533,671 Academic University of Hawaiʻi at Mānoa
74 University of Missouri Libraries 3,494,470 Academic University of Missouri
75 Vanderbilt University Jean and Alexander Heard Library 3,440,317 Academic Vanderbilt University
76 Mid-Continent Public Library 3,415,944 Public Separate political division governed by Board of Trustees
appointed by officials in Clay, Platte, and Jackson counties.[18]
77 Broward County Libraries Division 3,414,251 Public Broward County, Florida
78 University of Notre Dame Hesburgh Libraries 3,393,290 Academic University of Notre Dame
79 St. Louis Public Library 3,381,858 Public City of St. Louis[19]
80 Emory University Libraries 3,377,140 Academic Emory University
81 University of Utah J. Willard Marriott Library 3,373,141 Academic University of Utah
82 University of California, San Diego Libraries 3,372,785 Academic University of California, San Diego
83 Cuyahoga County Public Library 3,337,662 Public Independent political subdivision in Cuyahoga County, Ohio[20]
84 Montgomery County Department of Public Libraries 3,315,183 Public Montgomery County[21]
85 University of Tennessee Libraries 3,289,447 Academic University of Tennessee
86 University of Miami Libraries 3,265,503 Academic University of Miami
87 Howard-Tilton Memorial Library at Tulane University 3,257,609 Academic Tulane University
88 Buffalo & Erie County Public Library 3,227,867 Public City of Buffalo[22]
89 Temple University Libraries 3,205,539 Academic Temple University
90 University of Nebraska–Lincoln Libraries 3,204,060 Academic University of Nebraska–Lincoln
91 Allen County Public Library 3,203,217 Public Allen County, Indiana[23]
92 Syracuse University Library 3,174,700 Academic Syracuse University
93 Southern Illinois University Carbondale Morris Library 3,099,151 Academic Southern Illinois University Carbondale
94 Jacksonville Public Library 3,071,780 Public City of Jacksonville[24]
95 Auburn University Libraries 3,053,468 Academic Auburn University
96 University of California, Irvine Libraries 3,049,706 Academic University of California, Irvine
97 Georgetown University Library 3,041,624 Academic Georgetown University
98 University of Oregon Libraries 2,959,739 Academic University of Oregon
99 University of California, Santa Barbara Library 2,948,999 Academic University of California, Santa Barbara
100 Massachusetts Institute of Technology Libraries 2,914,052 Academic Massachusetts Institute of Technology

 

Religious Libraries using Dewey Decimal System

Special Catalogs

Electronic Catalogs

  • Logos Library - 44,817 multilingual novels, technical literature and translated texts

Misc. Helps

List of Dewey Decimal Classes

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