The Town of Merrimack's 4th of July Celebration is a public private partnership between the Town of Merrimack Parks & Recreation Department who coordinates the July 3rd Holiday Concert in the Park with the Merrimack Concert Association; the Annual 4th of July Parade and the Fireworks Display.

The Rotary Club of Merrimack coordinates the Annual Pancake Breakfast and the Merrimack Road Runners Boosters Club who coordinates the Annual Sparkler 5K Road Race on the morning of July 4th.