Riverside is an unincorporated community in Jefferson County, in the U.S. state of Missouri. [1]
A post office called Riverside was established in 1890, and remained in operation until 1910. [2] The community's name alludes to the nearby Mississippi River. [3]
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38°17′12″N 90°22′48″W / 38.28667°N 90.38000°W