Yacolt, WA -- U.S. town in Washington Population (2000): 1055 Housing Units (2000): 344 Land area (2000): 0.508373 sq. miles (1.316681 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.508373 sq. miles (1.316681 sq. km) FIPS code: 79975 Located within: Washington (WA), FIPS 53 Location: 45.865506 N, 122.407028 W ZIP Codes (1990): 98675 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Yacolt, WA Yacolt