Photo: John Paul Jones House, ca. 1758, Portsmouth, Rockingham County, NH. Listed on the National Register of Historic Places and designated as a National Historic Landmark in 1972. Photographed by user:Daderot (own work), 2005, [cc-by-3.0 (creativecommons.org/licenses/by/3.0)], via Wikimedia Commons, accessed February, 2014.
Rockingham County administrative offices are located at 119 North Road, Brentwood NH 03833; phone: 603-679-9350.
Rockingham is the only New Hampshire County to have a border on the Atlantic Ocean, albeit, only 17-miles long.
The county was incorporated March 19, 1771 and named by Governor Benning Wentworth in honor of Charles Watson Wentworth, Marquis of Rockingham.