Massachusetts Library Hours

Complete guide to library hours across Massachusetts including world-renowned university libraries, Boston Public Library system, and regional libraries throughout the Bay State.

Premier Massachusetts Libraries

Harvard Widener Library

Harvard University's main library, Cambridge

Mon-Thu: 8 AM - 12 AM
24/7 Study Areas 3.5M Books

MIT Hayden Library

MIT's main library with 24/7 access

24/7 Access with MIT ID
Always Open STEM Collections

Boston Public Library Central

Historic central library in Copley Square

Mon-Thu: 9 AM - 9 PM
Historic Building Research Collections

Massachusetts Library Regions

Greater Boston

  • Boston Public Library (25 branches)
  • Harvard University Libraries
  • MIT Libraries
  • Boston University
200+ Libraries
View Boston Libraries

Western Massachusetts

  • University of Massachusetts Amherst
  • Smith College
  • Mount Holyoke College
  • Springfield City Library
80+ Libraries

Central Massachusetts

  • Worcester Public Library
  • Clark University
  • Worcester Polytechnic Institute
  • Regional library networks
100+ Libraries