Mertztown is located in Pennsylvania. Mertztown, Pennsylvania has a population of 645. Mertztown is less family-centric than the surrounding county with 22% households with children. The county percentage for households with children is 29%.
The median household income in Mertztown, Pennsylvania is $69,881. The median household income for the surrounding county is $65,689 compared to the national median of $66,222. The median age of people living in Mertztown is 46.6 years.
The average high temperature in July is 83.3 degrees, with an average low temperature in January of 16.6 degrees. The annual precipitation is 46.48.