Merrimack is located in New Hampshire. Merrimack, New Hampshire has a population of 26,762. Merrimack is more family-centric than the surrounding county with 31.89% of the households containing married families with children. The county average for households married with children is 31.2%.
The median household income in Merrimack, New Hampshire is $114,737. The median household income for the surrounding county is $86,930 compared to the national median of $69,021. The median age of people living in Merrimack is 42.1 years.
The average high temperature in July is 82.5 degrees, with an average low temperature in January of 12.8 degrees. The average rainfall is approximately 46.1 inches per year, with 57.5 inches of snow per year.