Islandia, Florida, United States [City]; population was 13 in 1990; housing units was 7 in 1990; location is 25°23'N 80°13'W; land area is 6.14 square miles (3,932 acres); water area is 60.28 square miles (38,582 acres); FIPS code is 34175 [SourceCBP]
Islandia, New York, United States [Village]; population was 2,769 in 1990; housing units was 930 in 1990; location is 40°48'N 73°10'W; land area is 2.22 square miles (1,422 acres); FIPS code is 37840 [SourceCBP]