Jeffersonville is a village in Wayne County, Illinois, United States. The population was 366 at the 2000 census.
Although its official name is Jeffersonville, the village is known locally as Geff, with that spelling appearing on local road signs, the US Post office, and many official documents. "Geff" is pronounced as though it were spelled "Jeff". The name change is said to have been made during the 19th century by the railroad, in order to distinguish the village in Illinois from Jeffersonville, Indiana.
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