Updated October 2026. The Denville Public Library at 121 Diamond Spring Road is open six days a week, lends free museum passes to Denville residents, runs storytime for babies through preschoolers five days a week, and just switched to a new name for its lending network. This guide covers Denville Public Library hours, how to get a library card, museum passes, kids storytime, programs for adults, the Friends book sale and upcoming holiday closings.
All details come from the library’s own website, denvillelibrary.org, and the library network’s announcements, checked in October 2026. For other town services, see our Denville municipal building hours and phone numbers and our Denville schools guide.
Quick facts
- Address: 121 Diamond Spring Road, Denville, NJ 07834
- Phone: (973) 627-6555
- Hours: Monday to Thursday 9:30 a.m. to 9 p.m.; Friday and Saturday 9:30 a.m. to 5 p.m. No Sunday hours are listed.
- Curbside pickup: Monday to Thursday 9:30 a.m. to 7 p.m.; Friday and Saturday 9:30 a.m. to 4:30 p.m.
- Library card: Free for Denville residents, Denville K-12 school employees and non-resident students who attend school in Denville
- Network: Pillar Libraries, formerly MAIN Library Alliance
- Website: denvillelibrary.org
Hours and location
The library sits on Diamond Spring Road just past the Pocono Road traffic light, a short walk from Downtown Denville. From Route 80 East, take Exit 38 to Route 46 East, turn left at the Denville Center sign and left onto Diamond Spring Road; the library is on the left just past the Pocono Road light. From Route 80 West, take Exit 39 to Route 46 East, then Route 53 North, turn right onto West Main Street and right onto Diamond Spring Road at the second light.
Address: 121 Diamond Spring Road, Denville, NJ 07834
Phone: (973) 627-6555
Hours: Mon to Thu 9:30 a.m. to 9 p.m.; Fri and Sat 9:30 a.m. to 5 p.m.
Website: denvillelibrary.org
How to get a Denville library card
Cards are free for Denville residents, teachers and staff at Denville K-12 schools, and non-resident students who attend school in Denville. Apply with the online library card application on the library’s website and staff will follow up. You need a card to borrow materials, to use the library’s digital content and to reserve museum passes. If you do not fit those groups, call the library to ask about your options.
Pillar Libraries, the new name for MAIN
On Oct. 5, 2026, the MAIN Library Alliance, the shared catalog network Denville belongs to, became Pillar Libraries. The network links dozens of public libraries in Essex, Hunterdon, Morris, Somerset, Sussex, Union and Warren counties. What changes for you:
- Old mainlib.org links now redirect to pillarlibraries.org.
- The mobile app is renamed Pillar Libraries (NJ); you do not need to re-download it.
- Hold, renewal and overdue notices now come from @pillarlibraries.org addresses, so add that domain to your safe senders list.
You can still search the Denville catalog, place holds and manage your account at the library’s online catalog. For items outside the network, the library links to JerseyCat for interlibrary loan.
Ebooks, audiobooks and streaming
A Denville card unlocks Libby for ebooks and audiobooks and Hoopla for streaming movies, music, comics and ebooks. The library’s Digital Content page also lists free resources for genealogy, job searching, test prep, language learning and legal research.
Museum passes
Adult Denville residents with a card in good standing can borrow passes that cover general admission at these museums:
- Battleship New Jersey (2 adults, 3 children)
- Brooklyn Botanic Garden (2 adults and accompanying children)
- Children’s Museum of Manhattan (4 people)
- Historic Morris County sites: Fosterfields, Historic Speedwell and Cooper Gristmill (2 adults, 3 children)
- Insectropolis (2 guests; under 2 free)
- Intrepid Sea, Air and Space Museum (2 adults, 2 children)
- Montclair Art Museum (2 adults and family children under 18)
- Morris Museum (2 adults, 3 children ages 3 to 18)
- Museum of Modern Art (5 guests free)
- Museum of the American Revolution (up to 2 adults, 4 children)
- Newark Museum of Art (2 adults, children under 17)
- Storm King Art Center (2 adults, 4 children under 18)
- USS Constitution Museum in Boston (up to 9 people)
How it works: reserve by phone at (973) 627-6555 or at the circulation desk. You get one pass per museum every 30 days and one pass per household at a time. Pick it up the day before or the day of your reservation with your card, keep it up to three days, and hand it back to a staff member, not the book drop. Late passes cost $5 per day. Passes do not cover special exhibits. Separately, Liberty Science Center gives library cardholders $3 off a full-price ticket or 10 percent off a membership.
Kids storytime
Fall storytimes started Sept. 8. Registration is through Eventbrite, linked from the library’s Children’s page, and new events usually open on Fridays at noon.
| Day | Time | Program |
|---|---|---|
| Monday | 9:45 a.m. | Moving Up! active storytime, 18 months to 3 years |
| Monday | 10:30 a.m. | Storytime for ages 2 and up |
| Tuesday | 11 a.m. | Storytime and craft, ages 3 and up |
| Wednesday | 10:30 a.m. | Fun with Feelings, ages 2 to 6 |
| Thursday | 9:30 a.m. | Fall Baby Group lapsit, 6 to 18 months |
| Saturday | 10 a.m. | Preschool storytime, all preschool ages |
The library also holds two evening storytimes a month on select Mondays at 6 p.m., plus themed preschool events on some Thursdays at 10:30 a.m. and free Take and Make craft kits for kids and teens.
Programs for adults and teens
Recurring in-person programs in fall 2026 include yoga on Tuesday mornings, a knitting and crochet group, canasta on Wednesday afternoons, Mah Jongg on Friday mornings, Friday Films at 1 p.m., a French conversation group on Saturdays, Role Playing with D&D, and a craft night. The library also runs virtual author talks, virtual art and history lectures and online cooking classes. Teens and tweens get their own Take and Makes and events, such as escape rooms. The full schedule is on the library calendar.
Meeting room and study space
The library has a meeting room that hosts programs and serves as a polling place on Election Day for Denville Ward 1, Districts 1 and 2. The library’s website does not list bookable private study rooms, so ask at the desk about quiet space before you plan a group study session.
Friends of the Library book sale
The Friends of the Denville Library run the annual used book sale. The 2026 sale was held June 26 to 28 at Town Hall, 1 St. Mary’s Place, with books, movies, music, audiobooks and video games. The library accepts donations of gently used items two boxes or bags at a time. Dates for the next sale have not been announced; check the Friends page on the library’s website.
Upcoming holiday closings
- Veterans Day: Closed Wednesday, Nov. 11, 2026.
- Thanksgiving: Closes at 1 p.m. Wednesday, Nov. 25, and reopens Monday, Nov. 30, at 9:30 a.m.
- Christmas: Closes at 1 p.m. Thursday, Dec. 24, and reopens Monday, Dec. 28, at 9:30 a.m.
- New Year’s: Closes at 1 p.m. Thursday, Dec. 31, and reopens Saturday, Jan. 2, 2027, at 9:30 a.m.
Frequently asked questions
What are the Denville Public Library hours?
The library is open Monday to Thursday from 9:30 a.m. to 9 p.m. and Friday and Saturday from 9:30 a.m. to 5 p.m. No Sunday hours are listed.
Who can get a Denville Public Library card?
Denville residents, employees of Denville K-12 schools and non-resident students who attend school in Denville. You can apply online through the library’s website.
Does the Denville library have museum passes?
Yes. Adult Denville residents with a card in good standing can reserve passes to 13 museums, including the Intrepid, the Morris Museum, MoMA and Battleship New Jersey, by calling (973) 627-6555 or visiting the circulation desk.
What happened to the MAIN library network?
MAIN Library Alliance changed its name to Pillar Libraries on Oct. 5, 2026. Old links redirect, the app was renamed Pillar Libraries (NJ), and library notices now come from pillarlibraries.org email addresses.
When is storytime at the Denville library?
Fall storytimes run Monday through Thursday and Saturday mornings, with separate groups for babies, toddlers and preschoolers. Register on Eventbrite through the library’s Children’s page.
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