Johnston City, Illinois, United States [City]; population was 3,706 in 1990; housing units was 1,733 in 1990; location is 37°49'N 88°56'W; land area is 1.71 square miles (1,095 acres); water area is 0.06 square miles (37 acres); FIPS code is 38544 [SourceCBP]
