He is in his early thirties. ✬

Tom was in his late thirties. ✬

Tom was in his early thirties. ✬

Tom is in his late thirties. ✬

Tom is in his early thirties. ✬

Tom doesn't want to get married until he's in his thirties. ✬

Tom died in his thirties. ✬

Tom appeared to be in his early thirties. ✬

Tom looked like he was somewhere in his late thirties. ✬

Tom and Mary are both in their thirties. ✬