25428 -- U.S. ZIP code Municipality (1990): INWOOD, West Virginia All ZIPs for this municipality (1990): 25428 Population (2000): 6744 Housing Units (2000): 2629 Land area (2000): 21.627104 sq. miles (56.013941 sq. km) Water area (2000): 0.009213 sq. miles (0.023861 sq. km) Total area (2000): 21.636317 sq. miles (56.037802 sq. km) Located within: West Virginia (WV) Location: 39.368967 N, 78.027423 W