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In page Oran Township, Fayette County, Iowa:

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According to the United States Census Bureau, Oran Township covers an area of 36.66 square miles (94.94 square kilometers); of this, 36.65 square miles (94.91 square kilometers, 99.97 percent) is land and 0.01 square miles (0.03 square kilometers, 0.03 percent) is water.