Larksville, Pennsylvania, United States [Borough]; population was 4,700 in 1990; housing units was 1,808 in 1990; location is 41°16'N 75°56'W; land area is 4.76 square miles (3,047 acres); water area is 0.16 square miles (102 acres); FIPS code is 41608 [SourceCBP]