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Traill County is a county located in the state of North Dakota. The 2010 census listed the population at 8,121. Traill County
was created in 1875 by the 1874-75 territorial legislature. Its county seat is Hillsboro, and its largest city is Mayville. It was named after
Walter John Strickland Traill, an employee of the Hudson's Bay Company and son of Canadian pioneer Catharine Parr Traill.
County headquarters were originally located in a small single-story building in Caledonia. Several replacement courthouses were build during the late 19th century and several votes to move the county seat to Mayville narrowly failed. Efforts to move the county seat to Hillsboro were more successful, and all county records were moved there in 1890
Named for Walter John Strickland Traill (1847-1933) who, as an employee of the Hudson's Bay Co., became a resident of the future county in 1870.
County QuickFacts: CensusBureau Quick Facts
Created by the 1874-75 territorial legislature and named for Walter John Strickland Traill (1847-1933) who, as an employee of the Hudson's Bay Co., became a resident of the future county in 1870. Government organized: February 23, 1875. County Seat: Caledonia, 1875-1891; Hillsboro, 1891-present.
As reported by the Census Bureau, the county has a total area of 863 square miles (2,240 km2), of which 862 square miles (2,230 km2) is land and 0.6 square miles (1.6 km2) (0.07%) is water.
Bordering counties are as follows: