Monkeys have an average life span of 20 to 25 years, but some species of monkeys, such as the Southern Pig-Tailed Macaque, can live up to 40 years in captivity. In the wild, however, their life span is much shorter, usually averaging between 12 and 25 years. For some species, such as the Bolivian Squirrel Monkey, lifespan can be up to 35 years in the wild.
It is quite difficult to give an exact answer on how long monkeys live, as this varies greatly depending on the species. On average, monkeys live between 12 and 40 years.