Morley is a city in Scott County, Missouri, United States. The population was 697 at the 2010 census. Morley was platted in 1868. The comm…Morley is a city in Scott County, Missouri, United States. The population was 697 at the 2010 census. Morley was platted in 1868. The community has the name of J. H. Morley, a railroad official. A post office called Morley has been in operation since 1869.