i think in US and Canada 36 ?
all i know is that the minimum is 8.
6 - Bears, Packers, loins, Steelers, Browns and Gaints (the Jets Have had Cheerleaders since 2006)
36 girls are selected each season to be part of the Dallas Cowboys Cheerleader organization.
That is allot of work to figure out if I'd to take a guess i would say around100-300 that is just a guess there is probably more