Mercer Map
Mercer is a city in Mercer County, Missouri, United States. The population was 318 at the 2010 census,a 7% decrease in population from the 2000 census at which time the population was 342.
Mercer is located at 40°30?43?N 93°31?46?W / 40.511846°N 93.529509°W / 40.511846; -93.529509.
According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.9 km²), all of it land.
Nearby cities include Newtown, Cainsville, Allerton, Spickard, Leon.