Issaquah, WA -- U.S. city in Washington Population (2000): 11212 Housing Units (2000): 5195 Land area (2000): 8.424113 sq. miles (21.818352 sq. km) Water area (2000): 0.027618 sq. miles (0.071529 sq. km) Total area (2000): 8.451731 sq. miles (21.889881 sq. km) FIPS code: 33805 Located within: Washington (WA), FIPS 53 Location: 47.535573 N, 122.043298 W ZIP Codes (1990): 98027 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Issaquah, WA Issaquah