There are around 4 million Aggarwals in the world today.
The name Aggarwal is derived from Agroha (Sanskrit Agrotaka), the original center of the Aggarwals, which is near Hisar in Haryana. From the Hisar region, Aggarwal descendants have migrated mostly to Punjab, Rajasthan, Delhi, and Western Uttar Pradesh, but they can also be found in other parts of India. Those living in Shekhawati region in Rajasthan are generally called Marwari.
Maharaj Agrasen, who lived around 5,150 years ago had 18 children. The names associated with Gotras (and variations thereof) come from each of the childrens' gurus and many of them serve as the surnames of the Aggarwal community today: Mittal, Bansal, Singhal, Jindal, Kansal, Airan, Tingal, Bindal, Garg, Goyal, Goyan, Mangal, Dharan, Madhukul, Tayal, Bhandal, Kucchal and Naagil. All eighteen of these names are synonymous with the Aggarwal surname.