Hilton San Francisco Union Square-3,300 Guests Seated | Hotels for Events | San Francisco
🏨 Hilton San Francisco Union Square
The Hilton San Francisco Union Square is the largest hotel on the West Coast. With 1,921 guest rooms and 134,500 square feet of flexible meeting and event space, it caters to events of all sizes, from intimate board meetings to large-scale conferences. The hotel features 44 meeting rooms, including expansive ballrooms and versatile breakout spaces, all equipped with modern amenities and supported by professional event planning services.
🪑 Largest Room Seated Capacity
The Grand Ballroom is the hotel’s largest event space, offering 29,637 square feet of space and accommodating up to 3,300 seated guests.
📊 Room Capacity Chart
Below is a chart detailing the capacities of select meeting rooms within the Hilton San Francisco Union Square:
| Room | Square Feet | Theater | Banquet | Classroom |
|---|---|---|---|---|
| Grand Ballroom | 29,637 | 3,300 | 2,500 | 2,000 |
| Grand Ballroom A | 9,657 | 1,110 | 800 | 600 |
| Grand Ballroom B | 19,980 | 2,297 | 1,800 | 1,400 |
| Continental Ballroom | 19,152 | 2,200 | 1,800 | 1,400 |
| Imperial Ballroom | 6,642 | 773 | 540 | 400 |
| Yosemite Room | 11,685 | 1,343 | 750 | 600 |
| Franciscan Room | 5,600 | 644 | 400 | 300 |
| Plaza Room | 6,237 | 717 | 440 | 330 |
| Executive Board Room | 680 | 18 | — | — |
| Green Room | 680 | 25 | — | — |
| Union Square Rooms (various) | 365–960 | 10–110 | 30–80 | 21–60 |
| Sunset Room | 312 | 12 | — | — |
| Presidio Room | 334 | 10 | — | — |
| Marina Room | 340 | 10 | — | — |
Note: Capacities may vary based on room setup and event requirements. For detailed floor plans and configurations, please refer to the hotel’s official resources.
