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Naperville

1. Naperville, Illinois, United States [City]; population was 85,351 in 1990; housing units was 30,906 in 1990; location is 41°46'N 88°9'W; land area is 27.94 square miles (17,881 acres); water area is 0.12 square miles (79 acres); FIPS code is 51622 [SourceCBP]
2. Naperville, Illinois, United States [Populated Place] is in DuPage County; location is 41°47'9"N 88°8'50"W [SourceGSP]
3. Naperville, Illinois, United States Postal Service Zip Code is 60540 (Sta #5; Sta #3; Sta #4; Sta #1; Sta #2), 60565 (Main Office Area 2), 60566 (Main Office Boxes; Hobson West (dlbu)) [SourcePSZ]