Lake Barrington, Illinois, United States [Village]; population was 3,855 in 1990; housing units was 1,702 in 1990; location is 42°13'N 88°10'W; land area is 5.18 square miles (3,313 acres); water area is 0.15 square miles (98 acres); FIPS code is 40884 [SourceCBP]