The New Hampshire Association of Counties represents the interests of county government in New Hampshire. The organization is a state-wide association, which includes the 30 elected county commissioners as well as all elected county officials and the professionals and staff who run county government in each of the ten counties.

The Association's activities include: providing training programs, supporting intergovernmental relationships with state and municipal officials, advocating on behalf of county government and county taxpayers before the New Hampshire General Court and the Governor and Council, and acting as a clearinghouse for information and best practices which relate to the efficient operation of county government in New Hampshire.