Main Library — Boulder Public Library District
🏢 Boulder Public Library District · Boulder, Colorado
Main Library — Boulder Public Library District
Spanning two architecturally bold buildings linked by a glass-enclosed walkway over Boulder Creek, the Main Library has been Boulder's intellectual and creative hub since 1961 — home to BLDG 61, a free full-scale makerspace that has helped launch more than 40 businesses, and the 190-seat Canyon Theater.
🕑 Library Hours
| Monday | 9am–7pm |
| Tuesday | 9am–7pm |
| Wednesday | 9am–7pm |
| Thursday | 9am–7pm |
| Friday | 9am–5pm |
| Saturday | 10am–5pm |
| Sunday | 12pm–5pm |
Hours may vary on holidays; check the library site before visiting.
📍 Location, Contact & Directions
Address: 1001 Arapahoe Ave, Boulder, CO 80302
Phone: (303) 441-3100
Website: boulderlibrary.org
Plus Code: 85GP2P79+H7 (Boulder, CO)
📱 Scan for directions
Point your phone camera at the code to open turn-by-turn directions in Google Maps.
👋 Use the Library Online
📖 About Main Library — Boulder Public Library District
Boulder's Main Library has anchored the banks of Boulder Creek since 1961, when it replaced the city's original 1906 Carnegie building on Pine Street. Today the campus spans 92,164 square feet across two architecturally distinct wings: the original 1961 building by James M. Hunter and Associates and a striking 53,000-square-foot 1992 addition by Midyette-Seieroe-Hartvonft and Associates — a three-story Lyons sandstone cube fronted by a skewed glass cone at the Arapahoe Avenue entrance. A glass-enclosed bridge over Boulder Creek connects the two wings, housing the library shop and coffee bar. In November 2022, Boulder voters approved Ballot Measure 6C, making the Boulder Public Library District an independent taxing entity fully autonomous from the City of Boulder, funded by a voter-approved 3.5-mill property tax levy. The district operates a countywide shared catalog through the Marmot Library Network and has been fine-free since March 2019.
⭐ What makes this library special
- Glass-enclosed bridge over Boulder Creek connecting the 1961 original building and the 1992 Lyons sandstone addition — a landmark setting unique among Colorado public libraries
- BLDG 61 free community makerspace (est. 2016): 3D printers, laser cutters, CNC machines, a woodshop, welding, screen printing, and electronics workbench — has helped launch 40+ businesses and 10 patents
- Canyon Theater: 190-seat auditorium inside the library hosting free film screenings, chamber concerts, lectures, and community performances throughout the year
- Fine-free since March 2019 — all overdue fines eliminated to remove barriers to access for every Boulder resident
- Fully independent library district since November 2022 (Measure 6C), governed by an elected Board of Trustees and funded by a dedicated 3.5-mill property tax levy
📱 Digital Resources — Free with Your Library Card
Boulder cardholders stream, borrow, and research free through the district's digital collections:
📚 Services
- BLDG 61 Makerspace — laser cutters, 3D printers, CNC machines, woodshop, welding, screen printing, vinyl cutters & electronics workbench (free with library card; open studio Tue/Wed 1–6 PM, Sat 12–4 PM)
- Canyon Theater — 190-seat auditorium for films, live music, lectures & community events
- Carnegie Library for Local History — separate branch at 1125 Pine St (walk-in Thu & Sat 12 PM) for genealogy & local history research
- Culture Pass — free passes to Boulder-area cultural institutions, reservable up to 30 days ahead
- Meeting & study room reservations for community groups
- Interlibrary loan via Marmot Library Network
- Career Online High School — accredited diploma program via library card
- In-library Ancestry access for genealogy research
🎸 Programs
- BLDG 61 Open Studio — drop-in maker sessions Tue/Wed 1–6 PM & Sat 12–4 PM
- STUDIO 24 — quarterly themed maker residency; Jun–Nov 2026 theme is creative reuse
- Canyon Theater series — free & ticketed films, chamber concerts & theatrical premieres year-round
- Brainfuse HelpNow — live online tutoring K–college & adult job coaching
- Gale Courses — six-week instructor-led online learning in tech, business & creative fields
- Seed to Table — seed library for community gardeners
📍 Nearby Libraries in Boulder County
Distances are approximate straight-line miles from this library.
❓ Frequently Asked Questions
Why does Boulder's Main Library have a walkway over a creek?
The library campus spans Boulder Creek by design. When the original building opened in 1961, it was sited along the creek corridor, and the 1992 Midyette-Seieroe-Hartvonft addition on the Arapahoe Avenue side was connected to it via a glass-enclosed bridge that crosses directly over the water. The walkway houses the library shop and coffee bar, so patrons cross Boulder Creek simply by moving between the two wings.
What is BLDG 61, and do I need to pay to use it?
BLDG 61 is a free, full-scale community makerspace inside the Main Library's north building, launched in 2016 with funding from the Boulder Library Foundation. It offers laser cutters, 3D printers, CNC machines, a woodshop, welding equipment, screen printing, vinyl cutters, and an electronics workbench — all free with a library card. Drop-in open studio hours are Tuesday and Wednesday 1–6 PM and Saturday 12–4 PM; specialized equipment requires a brief orientation first. Since opening, BLDG 61 has helped patrons launch more than 40 businesses and file 10 patents.
What happened to Boulder's original Carnegie library building?
Boulder's Carnegie library opened in 1906 on Pine Street, funded by a $15,000 Andrew Carnegie grant. When the current Main Library opened in 1961, the Carnegie building fell into disuse until staff rallied to reclaim it in 1981. It reopened in 1983 as the Carnegie Library for Local History at 1125 Pine Street — now a separate branch of the Boulder Public Library District, listed on the National Register of Historic Places. Walk-in hours are Thursdays and Saturdays from noon.
Is Boulder Public Library still run by the City of Boulder?
No. In November 2022 Boulder voters approved Ballot Measure 6C, creating the Boulder Public Library District as a fully independent taxing entity separate from the City of Boulder. The elected Board of Trustees held its organizational meeting in May 2023. The District is funded by a voter-approved 3.5-mill property tax levy that generates approximately $17.5 million per year — giving the library full autonomy recognized under Colorado law.
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