How prevalent is fragile x syndrome?

See below: Fragile x syndrome is the most frequent form of inherited intellectual disability. The prevalence in men runs from 1 in 4, 000 to 1 in 6.000. The prevalence in women is estimated at 1 in 10.000.

I'll use the the FXS: Association data from 2011. 1:3600-4000 boys & 1:4000-6000 girls, because not all girls with the full mutation have fragile x syndrome. It is the most common inherited cause of intellectual disability in males.