The capacity of a party bus can vary depending on its size and layout. Party buses come in various sizes, ranging from small to large. Typically, a small party bus can accommodate around 10-20 individuals, while larger ones can accommodate up to 40 or more. The exact number of individuals that can be accommodated will also depend on the seating configuration and amenities inside the bus. It is always best to check with the specific party bus rental company for the exact capacity of their vehicles.