Marquand is a small city in eastern Madison County, Missouri, United States. The population was 186 at the 2020 census. Marquand was o…Marquand is a small city in eastern Madison County, Missouri, United States. The population was 186 at the 2020 census. Marquand was officially recognized and incorporated as a town in 1906. Marquand was platted in 1869, and named after Henry G. Marquand, a railroad official. A post office called Marquand has been in operation since 1870.