Approx 1 in 800 or 0.12% or 340,000 people in USA Down syndrome occurs in 1 in 800 births. Hopefully that helps :D
according to the internet 1 in 733 babies has downs so about 8589 people in Tennessee have downs
people that have down syndrome have 47 chromosomes they get 23 from the mother and 23 from their father they are different from others because the have a extra chromosome that make them different...
According to the Canadian Down Syndrome Society there are approx 35,000 Canadians with Down Syndrome.
Approximately 1 in 800 people, or .12%, which is around 340,000 people.