25920 -- U.S. ZIP code Municipality (1990): SLAB FORK, West Virginia All ZIPs for this municipality (1990): 25920 Population (2000): 202 Housing Units (2000): 84 Land area (2000): 4.487430 sq. miles (11.622390 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.487430 sq. miles (11.622390 sq. km) Located within: West Virginia (WV) Location: 37.683749 N, 81.343596 W