Okay so basically when I speak about my circles you have to understand one more thing that my family isn’t exactly the circles I’m talking about. My family isn’t the school I went to type….etc….so let’s talk about the circles I personally am in
Girls start shidduchim 18 (some cases younger but very rare) and old would be considered 21 but still 18/19 is ideal
Boys mostly start at 18 as well (basically never earlier) and ideal would be getting engaged by 20 but not considered old until 22+
You have to understand the more chassidish the family the earlier these numbers go in kj/Monroe moms freak out if the boy is still 19 and not engaged…the yeshivah by 17 is full and the grade of 19 year olds is 3/4 gone