Merrimack is located in New Hampshire. Merrimack, New Hampshire has a population of 27,401. Merrimack is more family-centric than the surrounding county with 29% households with children. The county percentage for households with children is 27%.
The median household income in Merrimack, New Hampshire is $106,288. The median household income for the surrounding county is $83,669 compared to the national median of $66,222. The median age of people living in Merrimack is 44.9 years.
The average high temperature in July is 82.5 degrees, with an average low temperature in January of 12.1 degrees. The annual precipitation is 45.43.