Merrimac is located in Massachusetts. Merrimac, Massachusetts has a population of 6,698. Merrimac is less family-centric than the surrounding county with 27.87% of the households containing married families with children. The county average for households married with children is 30.06%.
The median household income in Merrimac, Massachusetts is $88,832. The median household income for the surrounding county is $86,684 compared to the national median of $69,021. The median age of people living in Merrimac is 48.2 years.
The average high temperature in July is 82.4 degrees, with an average low temperature in January of 14.9 degrees. The average rainfall is approximately 49.9 inches per year, with 56.5 inches of snow per year.