Thiells, New York, United States [CDP]; population was 5,204 in 1990; housing units was 1,525 in 1990; location is 41°12'N 74°1'W; land area is 1.86 square miles (1,188 acres); water area is 0.01 square miles (9 acres); FIPS code is 73583 [SourceCBP]