Perhaps 30-33 could say "early thirties", 34-36 "mid thirties" and 37-29 "late thirties"? (of course this would apply to other age groups to
It can have a lot of impact on a society and for RP reasons.
A man in his late thirties can have some respect, since he has been around for quite a while. But a 31 y/o can still be seen as young.
A young woman might be physically attracted to a man in his early thirties, but thinking a man in his late thirties is just a bit to old.

