Question: Where are the other members of the Warriors? When they get back to Coney Island, it's just them, the ones who went to Bronx. Was their gang that small? 10 guys.
Answer: That's the entire gang. They are a small gang but well-respected due to their toughness.
Answer: How would the rest of the Warriors know where to show up? The members on the run all night couldn't exactly stop to make a phone call.