Wappapello ( ) is an unincorporated community in southeastern Wayne County, Missouri, United States. It is located approximately thirteen miles northeast of Poplar Bluff, next to Lake Wappapello.
Wappapello was founded by Samuel R. Kelley, a veteran of the Civil War. He was originally from Ohio, saw the Wappapello area as a young Union soldier, and homesteaded land there after the war.
Wappapello was laid out in 1884 when the railroad was extended to that point. The community has the name of a Native American chieftain. A post office called Wappapello has been in operation since 1884.
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