Pay Library Fees & Fines


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Humboldt County Public Library website.  

Please read this page carefully before going forward.

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The library logo - framed by a book, a mighty redwood stands by water and hills.

Use Your Card to Pay Via ACI Payments

You will be arriving at the secure ACI Payments website. This site is used by the Humboldt County Library so you can pay library fines or make donations online. 

Be sure to know the exact amount you want to pay before starting. 

ACI Payments does not know the amount of your bill. The Library cannot give refunds for amounts overpaid to ACI Payments.

To use ACI Payments, you must have these 3 things

1.)  A credit card or debit card

2.)  Your Library Account Number (use the whole number on your library card)

2.) Your own email address.


When you are making a donation to the Library, there is no cost to use ACI Payments.

Fees & Fines

ACI Payments will charge you a small convenience fee for payments of fees or fines.  You can see what the cost will be before you pay. 

Pay In Person Option

If you prefer not to pay the ACI Payments convenience fee, you may pay in person at the Library Circulation Desk with cash or a check. (Paying by card is only available through ACI Payments.)

Continue as Guest Option

Use this option if you want to make sure ACI Payments saves no personal  information about you. You'll see this option on screen 4 of the ACI dialogue. (You still need to enter your name and some other details on screen 5 so the library can process your payment, but when you close the site, ACI will not retain that input in its own system.)