24122 -- U.S. ZIP code Municipality (1990): MONTVALE, Virginia All ZIPs for this municipality (1990): 24122 Population (2000): 2019 Housing Units (2000): 874 Land area (2000): 34.427273 sq. miles (89.166225 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 34.427273 sq. miles (89.166225 sq. km) Located within: Virginia (VA) Location: 37.413397 N, 79.707893 W