Healdsburg, California, United States [City]; population was 9,469 in 1990; housing units was 3,766 in 1990; location is 38°37'N 122°52'W; land area is 3.39 square miles (2,170 acres); water area is 0.02 square miles (13 acres); FIPS code is 33056 [SourceCBP]