Oldest to youngest in Thorin’s Company:
Approximately three ages (as in eras) – Gandalf
195 – Thorin
178 – Balin
169 – Dwalin
167 – Oin
158 – Gloin
131 (at the least) – Dori
131 (at the most) – Nori
somewhere around here probably – Ori
82 – Fili
77 – Kili
51 – Bilbo
Unable to find specifics on Bifur, Bofur and Bombur. Gleaned from this wiki.
Wait, I thought Balin was older than Thorin? He was Thror’s adviser when Thorin was yet a wee little dwarflet. If Thorin was 195, he’d be an old man. Dwarf. Old dwarf.
Maybe he’s got good genes?