Library Hours

Monday12:00 pm - 08:00 pm
Tuesday10:00 am - 06:00 pm
Wednesday10:00 am - 06:00 pm
Thursday10:00 am - 06:00 pm
Friday09:00 am - 03:00 pm
Saturday09:00 am - 03:00 pm

Library Card Eligibility

Who is eligible?

Free library cards are available to all residents of the Borough of Mount Arlington. Resident library cards are valid for three years and may be renewed with valid ID and proof of Mount Arlington residence.

Don’t live in Mount Arlington but still want a library card? Go to your local library (all Morris County libraries can be found listed on the MAIN website ( and sign up for a card with them. Then you will have access to the 49 libraries in the Morris County system, including Mount Arlington!

If you are a resident of Sussex county, you can get an open borrowing sticker from your local Sussex county branch, and then access Morris County’s library catalog. Please note that if you are an open borrower, you will NOT be able to place holds on items in the Morris County system.

What do I need to bring?

Bring photo ID of any kind (driver’s license, student ID, military ID, passport, etc.) that has your Mount Arlington address on it. If your license is not updated to include your Mount Arlington address, you will need to also bring a bill or statement with your current address.