N.H. Rev. Stat. § 22:5

The county of Carroll is bounded thus: Beginning at the northerly corner of New Durham; thence by the northerly line of the county of Belknap to the easterly line of Holderness; thence by the easterly lines of Holderness, Campton and Thornton to the northwest corner of Sandwich; thence by the northerly line of Sandwich to the westerly line of Albany; thence by the westerly line of Albany to the northwest corner thereof; thence by the north line of Albany to the west line of Bartlett; thence by the west lines of Bartlett and Hart's Location to the north line of said Location; thence by the northerly and easterly lines of said Location to the west line of Bartlett; thence by the westerly lines of Bartlett and Jackson to the northerly line of Jackson; thence by the northerly line of Jackson and the westerly and northerly lines of Chatham to the state line; thence southerly by the state line to the line of the county of Strafford; thence by the northerly line of the county of Strafford to the bound first mentioned.