A small rodent endemic to the western coastal regions of North America, primarily inhabiting grasslands, agricultural areas, and forest edges in California and adjacent states.
Coastal grasslands, meadows, agricultural landscapes, woodland margins, and riparian zones in California and Oregon, with elevation ranges from sea level to 2,700 meters.
Critical seed disperser, prey species for raptors and carnivorous mammals, and plays a significant role in ecosystem nutrient cycling through burrowing and foraging activities.