Souhegan Valley Chamber of Commerce
- Serving the towns of Amherst, Brookline, Greenfield, Greenville, Hollis, Lyndeborough, Mason, Milford, Mont Vernon, New Boston, New Ipswich, Temple, and Wilton. Event calendar, membership information, relocation package details, board of directors, and co
- http://www.souhegan.net/

Greater Salem Chamber of Commerce
- Serving the towns of Atkinson, Hampstead, Pelham, Salem and Windham. Member directory, event calendar, community information, Board of Directors and staff list, and membership information.
- http://salemnhchamber.org/

Greater Derry Chamber of Commerce
- Serving the towns of Atkinson, Auburn, Chester, Derry, Hampstead, Londonderry and Windham. Member directory, chamber events, membership information, and contacts.
- http://www.derry-chamber.org/