Not just Gay, Bi or Straight

Not XX and not XY

one in 1,666 births

Klinefelter (XXY)

one in 1,000 births

Androgen insensitivity syndrome

one in 13,000 births

Partial androgen insensitivity syndrome

one in 130,000 births

Classical congenital adrenal hyperplasia

one in 13,000 births

Late onset adrenal hyperplasia

one in 66 individuals

Vaginal agenesis

one in 6,000 births

Ovotestes

one in 83,000 births

Idiopathic (no discernable medical cause)

one in 110,000 births

Iatrogenic (caused by medical treatment, for instance progestin administered to pregnant mother)

no estimate

5 alpha reductase deficiency

no estimate

Mixed gonadal dysgenesis

no estimate

Complete gonadal dysgenesis

one in 150,000 births

Hypospadias (urethral opening in perineum or along penile shaft)

one in 2,000 births

Hypospadias (urethral opening between corona and tip of glans penis)

one in 770 births

Total number of people whose bodies differ from standard male or female

one in 100 births

Total number of people receiving surgery to “normalize” genital appearance

one or two in 1,000 births

Source: www.isna.org/faq/frequency Comprehensive List of LGBATQQI + Term Definitions