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Diagonal

1. Diagonal, Iowa, United States [City]; population was 298 in 1990; housing units was 155 in 1990; location is 40°49'N 94°20'W; land area is 0.91 square miles (582 acres); FIPS code is 21270 [SourceCBP]
2. Diagonal, Iowa, United States [Populated Place] is in Ringgold County; location is 40°48'34"N 94°20'31"W [SourceGSP]
3. Diagonal, Iowa, United States Postal Service Zip Code is 50845 [SourcePSZ]