How old is Wolverine?

Wolverine's given name is James Howlett (called Jimmy by his half brother, and commonly known as Logan) was born in 1831, and was 178 years old as depicted in X-Men Origins: Wolverine (2009).

He was introduced into Marvel comics in July of 1974 with several planned origins never being provided. While Wolverine looks like he's in his late 30's, he was born in the mid-19th century, and thus is over 150 years old!