New Rockford, North Dakota New Rockford, North Dakota New Rockford is a city in Eddy County, North Dakota, United States. It is the county seat of Eddy County. The population was 1,391 at the 2010 census. New Rockford was founded in 1883. New Rockford was founded in 1883 at the time of the arrival of the Great Northern Railway into the area. In 1915, residents mounted a challenge to have the state capital relocated from Bismarck, North Dakota to New Rockford. This was not passed and defeated, leaving Bismarck the state capital of North Dakota. New Rockford is located at (47.680579, -99.136177). According to
U.S. Route 12 in North Dakota run concurrently for a short distance through the city. U.S. Route 12 in North Dakota U.S. Route 12 (US 12) is a part of the U.S. Highway System that travels from Aberdeen, Washington, to Detroit, Michigan. In the state of North Dakota, US 12 extends from the Montana border east to the South Dakota border. Throughout the state, US 12 is a two-lane undivided highway that runs through Adams, Bowman and Slope counties in southwest North Dakota. The speed limit is on rural segments, with slower posted speeds within the cities of Marmarth, Rhame, Bowman, Scranton and Hettinger. US 12