Hillsboro is a small city in Traill County, North Dakota. It is the county seat of Traill County. The population was 1,649 at the 2020 census. Hillsboro was founded in 1881.
Hillsboro sits in the fertile Red River Valley. Local agriculture has dominated the area's economy from the beginning. With its location on Interstate 29, halfway between the two metropolitan centers of Greater Grand Forks and Fargo–Moorhead, Hillsboro has seen steady population growth in recent years and has become somewhat of a bedroom community.
The area along the Goose River that is now Hillsboro was first settled by German and Norwegian settlers around 1870. In 1880, the present day site of Hillsboro was founded under the name "Comstock". Local folklore tells of the residents of nearby Caledonia, North Dakota turning away a shabby surveyor because of his appearance. This man was then offered hospitality by residents in the tiny settlement of Comstock. The man turned out to be railroad baron