St. Augustine Shores, Florida, United States [CDP]; population was 4,411 in 1990; housing units was 2,261 in 1990; location is 29°49'N 81°19'W; land area is 3.44 square miles (2,199 acres); water area is 0.03 square miles (19 acres); FIPS code is 62550 [SourceCBP]