Vole Basics Meet the Vole. According to experts there are over 100 species living in North America, Europe and Asia. There are 23 species in the US alone. They live about 3-6 months, weigh approximately 2 oz and grow to be 4-9” long, including the tail. They make their homes in complex burrow systems made up of tunnels and surface runways where adult and young live together in nests made of dry grass. In the winter, they may have temporary above ground nests in the deep snow.