Marlo is an unincorporated community in Ste. Genevieve County, in the U.S. state of Missouri. [1]
The community's name most likely is partially derived from marble, since there were deposits of marble near the original town site. [2]
37°56′59″N90°06′49″W / 37.94972°N 90.11361°W / 37.94972; -90.11361
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