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De Quincy

1. De Quincy, Louisiana, United States [City]; population was 3,474 in 1990; housing units was 1,499 in 1990; location is 30°27'N 93°27'W; land area is 2.99 square miles (1,916 acres); FIPS code is 20575 [SourceCBP]
2. De Quincy, Louisiana, United States [Populated Place] is in Calcasieu Parish; location is 30°27'1"N 93°25'59"W; elevation is 65 feet [SourceGSP]
3. De Quincy, Louisiana, United States Postal Service Zip Code is 70633 [SourcePSZ]