State of New Hampshire - Merrimack
- Part of the state's official site. Town's mailing address, population, county, and districts for election purposes. Includes related links.
- http://www.nh.gov/municipal/merrimac.html

Town of Merrimack
- Official town website. Municipal departments, ordinances and codes, community resources, news and announcements, and online permit and applications forms.
- http://www.ci.merrimack.nh.us/

Merrimack Online
- Activities and interesting things in town.
- http://www.merrimackonline.com