Pomeroy, WA -- U.S. city in Washington Population (2000): 1517 Housing Units (2000): 740 Land area (2000): 1.780192 sq. miles (4.610675 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.780192 sq. miles (4.610675 sq. km) FIPS code: 55120 Located within: Washington (WA), FIPS 53 Location: 46.473334 N, 117.598119 W ZIP Codes (1990): 99347 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Pomeroy, WA Pomeroy