Mercer County Library System

We are committed to providing the materials and services that satisfy the educational, informational, recreational, and cultural needs of our diverse community, and strive to encourage a lifelong interest in reading.

Applications are reviewed by one of our employees periodically between the hours of 10:00 am and 4:00 pm, Monday through Friday, and if you file a request after 4:00 pm, you may not be issued one until the following day. This application is only available to Resident Card holders at this time. All other types of card holders must visit their home branch in person with the required documents in hand. For more information on eligibility and/or valid proof of ID and residency, please see System Policies: Applying for a Library Card.

    Account Information



    Online renewal is only available to resident cardholders at this time (i.e. anyone who lives or owns property within the boundaries of East Windsor, Ewing, Hightstown, Hopewell Township, Lawrence, Robbinsville, or West Windsor townships). All other cardholders must visit their branch in person with the required documents in hand.


    About You





    If you have a first name that you go by which is different than the name above/on your identification, please enter that here.



    Please enter as it is written on your form of identification.

    Contact Information


    Address Line 1

    Address Line 2

    Town
    State
    Zipcode




    Please Read

    Once this application is submitted, a staff member will review and either confirm or deny your request via email. If confirmed, a library barcode and PIN number will be given to you over email. This is a temporary card that will expire after three (3) months. In order to obtain your physical card, please visit the branch you indicated on the application within three (3) months with valid ID.

    Once this application is submitted, a staff member will review and either confirm or deny your request via email. If confirmed, your card will be temporarily renewed for a period of three (3) months wherein you will need to provide the required documents electronically to secure a full renew of three (3) years. To speed up the process, you may reply to the email confirmation with the required documents attached.