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CW MARS At a glance

157 Libraries

with 184 branch locations spread across Central and Western Massachusetts

900k Patrons

registered in our shared system

8M Items

waiting to be enjoyed in our shared catalog

7.7M loans

borrowed in FY22, including 5.6 million physical items & 2.1 million e-items


What's New?

What's Next?

Member Library List

Need a library card?

Register online for an eCard or contact your local CW MARS member Library. Click here for more info.

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