Mercer is located in Maine. Mercer, Maine has a population of 688. Mercer is less family-centric than the surrounding county with 19% households with children. The county percentage for households with children is 22%.
The median household income in Mercer, Maine is $45,600. The median household income for the surrounding county is $46,518 compared to the national median of $66,222. The median age of people living in Mercer is 48 years.
The average high temperature in July is 79.15 degrees, with an average low temperature in January of 4.14 degrees. The annual precipitation is 40.19.