Merrimack County, NH
Merrimack County Map
The County of Merrimack is located in the State of New Hampshire. Find directions to Merrimack County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Merrimack County population is estimated at 152,622 people. The Merrimack County time zone is Eastern Daylight Time which is 5 hours behind Coordinated Universal Time (UTC).