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Oelwein

1. Oelwein, Iowa, United States [City]; population was 6,493 in 1990; housing units was 2,918 in 1990; location is 42°41'N 91°55'W; land area is 3.64 square miles (2,329 acres); FIPS code is 58620 [SourceCBP]
2. Oelwein, Iowa, United States [Populated Place] is in Fayette County; location is 42°40'24"N 91°54'48"W [SourceGSP]
3. Oelwein, Iowa, United States Postal Service Zip Code is 50662 [SourcePSZ]