CW MARS At a glance

150 Libraries

with 177 branch locations spread across Central and Western Massachusetts

1M Patrons

registered in our shared system

8.1M Items

waiting to be enjoyed in our shared catalog

11.5M loans

borrowed in FY20, including 9 million physical items & 1.5 million e-items


What's Next?

Member Library List

Need a library card?

Contact your local CW MARS member Library.


Search the Catalogs

Looking for your next read?

Check out our search and explore options.

Libby and OverDrive

Staying Home?

Download e-content through OverDrive and Libby


Help and FAQs

Need Help?

Take a look at our FAQs and Help Guides.


check us out on mobile!

The CW MARS Libraries app is available on iOS and Android. With the app, you can...

  • Search the catalog and place holds.

  • Manage existing holds.

  • View items checked out.

  • Pay fines and fees.

  • View and update lists.

  • Display and use your digital library card (where accepted).

  • And more!

Download Now!

CW MARS Libraries App - Google
CW MARS Libraries App - iOS