All residents of Mountain Lakes are entitled to a library card that can be used at any library in Morris County, free of charge. Lost cards may be replaced for $2. Children may have a card when they are in the first grade. A parent must sign each child’s registration card and is responsible for all materials borrowed on the card.
Non-residents who are employed in Mountain Lakes may be entitled to a Courtesy Card at no charge for a period of one year. It can be used for materials and services in the Mountain Lakes Library and the Morris County Library only. This privilege may be renewed.
Teachers in the Mountain Lakes School District, and all Mountain Lakes High School students, are eligible for a full-service library card, regardless of residency. This card must be renewed annually.
Boonton Township residents may purchase a full-service Family Membership Card. As of March 1, 2026 the annual fee for this card is $300 ($275 for those over 65). This fee is set by the Main Library Alliance, not Mountain Lakes Library.
Boonton Township residents are entitled to free membership at the Morris County Library; with this membership, all in-person borrowing must be done at the Morris County Library, and all online holds must be picked up there.
When applying for a library card, please bring 2 proofs of address (for example, a valid driver’s license and a utility bill).
You may also self-register for a card online.
As a member of the Main Library Alliance, a network of over 50 New Jersey libraries, patrons have access to the collections of all those libraries through the the Main app or the online Public Access Catalog (PAC). Materials requested from any participating library will be delivered to Mountain Lakes through Main’s interlibrary loan system.
Both the app and the PAC allow you to manage your account conveniently from your phone, tablet, or computer. You can search the catalog, place requests and holds, renew materials, and view all items borrowed on your card. You can also download audiobooks, e-books, and magazines, as well as access a wide variety of online educational databases.
If the title you need isn’t available in Morris County, we can help you search for it throughout New Jersey using JerseyCat, a free statewide interlibrary loan program that includes both public and university libraries. If it’s not available in state, JerseyCat allows request from out-of-state libraries through the Online Computer Library Center; however, shipping fees may apply.
The Mountain Lakes Library also participates in “Open Borrowing,” a reciprocal program that allows patrons in good standing to borrow in-person from among more than 75 public libraries in northern New Jersey. Participating libraries include LMxAC (Libraries Of Middlesex Automation Consortium), Main Library Alliance, PALS (Passaic Library System), and SWELL (Sussex Warren Electronic Lending Libraries).
