Mercer County Public Library
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How to Log In and Out of your Patron Account

Click on "Search MCPL Catalog" at the top of any page to go to Polaris.

  • Barcodes - Your 14 digit patron barcode number is the number on your library card.

  • Passwords - See a library staff member if you need to reset a password, or if you have forgotten your password. Your password is the same as your "PIN" number, and based on your birth date.

  1. Click My Account on the menu bar to log in.

  2. Click "Log In" on the menu bar. The log-in form is displayed.

  3. Type your 14 digit barcode number (from your library card) in the Barcode Number box.

  4. Type your account password in the Password box. Your default password is your birth month and day as 4 digits. (May 16 = 0516) MCPL also uses this number as your PIN number. If your password/PIN does not work, contact MCPL at 734-3680 to reset.

  5. Click Log In to submit the information. Use the menu bar at the top of the page to go to the information you are looking for.

  6. Log out by doing one of the following actions:

  • If you are viewing your patron account, click the Log Out link on a patron account display, or click Log Out in the Patron Account submenu.

Important:
Logging out protects your privacy. If you are using Polaris PowerPAC or a public computer in the library, be sure to log out.