We’ve already mentioned that some hamster species live longer than others, so you’re probably wondering which type of hamster has the longest life span! On average, a hamster will live for around 2 to 2.5 years. However, the life span varies depending on the type of hamster and ranges from 1.5 to 3.5 years. From longest to shortest, the following are the average life spans of the five most popular hamster species: Roborovski Hamster: 3 to 3.5 years.