Adolescence, Marriageable Age
The year approximate is your approximate age. This is also an indirect way to refer to adolescence, and when people reach marriageable age!
The reading is the reading of the vocab version of 年 plus 頃, put together. Note: You will also sometimes see this written partially in kana like 年ごろ.
That kid's always alone, right? He doesn't seem to have friends his age so I can't help worrying about him.
Isn't it hard to take care of three adolescent kids?
My daughter has become old enough to get married, but seems to have absolutely no desire to do so, saying that she'd rather focus on her career.