My son is 9 years old and his foreskin is not retracted yet is this normal?

Yes, this is normal. Some boys' foreskins can be easily retracted as early as age 4, but some boys will not be able to retract their foreskins until their teenage years. The most important thing is not to force the foreskin to retract and to allow the boy to retract it when it is comfortable. Forcing the foreskin to retract can cause tissue damage or result in paraphimosis, which is when the foreskin gets stuck behind the glans. For boys who can not retract their foreskin by their teenage years, studies have shown that up to 90% of cases can be resolved by exercises that gradually stretch the foreskin over a period of weeks or months. This treatment avoids the pain and possible adverse events following a circumcision.