) occur from northeastern New Mexico across to Alabama, up toward western West Virginia and northwest to central Alberta.
) occur from Alaska to the Atlantic coast, south to northern Georgia, and west to the Rocky Mountains. Also found in northern New Mexico.
) found along the Pacific Coast from British Colombia to the upper coastal regions of California.
) found throughout the western United States and Canada up to the southeastern edge of Alaska.
) found throughout the eastern United States from New Hampshire to southern Georgia, across to eastern Texas, and diagonally up to the Great Lakes.
) found from the Sierra Nevada in California to British Colombia and across to the Rocky Mountain Range.
) found along the Pacific Coast from lower British Colombia to the upper coastal regions of California.
O'Brein, John M., 1994. Voles: Prevention and control of wildlife damage. Agricultural Programs Coordinator. Nevada Department of Agriculture
University of Michigan Museum of Zoology - Animal Diversity Web