The entire state is about 17% Hispanic-Latino origin. That breaks down to 2.3% Mexican, 3% Puerto Rican, 5.2% Cuban, 6.3% Other (which would include Latin-Americans and South-Americans).
Miami-Dade is 57% Hispanic-Latino(1.7% Mexican; 3.6 Puerto Rican; 28.9 Cuban; 23.2 Other Hispanic.)
Broward is about 17% (1.2% Mexican, 3.4% Puerto Rican, 3.1% Cuban, 9% Other Hispanic).
These stats are from the 2000 Census.