Long-eared chipmunks are solitary and territorial around their nests, which tend to be in cavities of trees logs, stumps, snags, and burrows. Their home ranges have been found to vary between 0.8-4.6 ac. Breeding season is from April to mid-July with a gestation period of 31 days for females. They have one litter per year of 3-8 young, which are born in June. In July and August, the young emerge from the nest.
Predators are weasels, raptors, coyotes, foxes and bobcats.
The conservation of low to moderate in canopy coniferous forests at high elevations is the most important conservation effort for this species. Almost half of their potential range is at extreme fire risk.