New Sarpy, Louisiana, United States [CDP]; population was 2,946 in 1990; housing units was 1,108 in 1990; location is 29°59'N 90°23'W; land area is 1.78 square miles (1,137 acres); water area is 0.48 square miles (309 acres); FIPS code is 55140 [SourceCBP]