How many Socs were at the Rumble?

There is no specific number of Socs given as being at the Rumble in S.E. Hinton's novel "The Outsiders."

The novel doesn't focus on exact numbers, but rather on the conflict between the Greasers and Socs and the individuals involved.

It's important to remember that the Rumble is a large-scale fight, likely with dozens of participants from both sides.