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Mercer Island

1. Mercer Island, Washington, United States [City]; population was 20,816 in 1990; housing units was 8,321 in 1990; location is 47°34'N 122°14'W; land area is 6.38 square miles (4,085 acres); water area is 6.73 square miles (4,305 acres); FIPS code is 45005 [SourceCBP]
2. Mercer Island, Washington, United States [Populated Place] is in King County; location is 47°34'15"N 122°13'15"W; was named in year 1978 [SourceGSP]
3. Mercer Island, Washington, United States Postal Service Zip Code is 98040 (Sta #1) [SourcePSZ]