World Trade Center Capacity: Estimates for the Original Complex

World Trade Center Capacity

Exact capacity depends on spaces considered, occupancy, and event type. The original complex (seven buildings, including the Twin Towers) had ~10.7 million sq ft of office space. Estimates:

• North Tower: ~25,000 people
• South Tower: ~25,000 people
• 7 World Trade Center: ~1,500 people

Total complex capacity estimated around 50,000 under normal conditions; could exceed during large events. Figures exclude other low-rise buildings and post-9/11 changes.