Delmar is an unincorporated community in northeast Laclede County, in the U.S. state of Missouri.
The community is on a county road just east of Missouri Route JJ approximately 2.5 miles northeast of Sleeper and three miles southwest of Stoutland.Missouri Atlas & Gazetteer, DeLorme, 1st ed., 1998, p. 45
The community most likely was named after a thoroughfare of the same name in St. Louis.
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