The average life span of a monkey is around 20 years, although some species may have a shorter lifespan. The smaller species, such as marmosets and tamarins, may live up to 15 years; larger monkeys, such as baboons and macaques, may live up to 30 years. In captivity, the life span of a monkey can extend up to 40 years.
The life span of a monkey usually ranges between 15 and 30 years.