Casselton is a city in Cass County, North Dakota, United States. The population was 2,329 at the 2010 census. making it the twentieth largest city in North Dakota. Casselton was founded in 1876. The city is named in honor of George Washington Cass, a president of the Northern Pacific Railway, which established a station there in 1876 to develop a town for homesteaders. Casselton is the hometown of five North Dakota governors.
Casselton had its origin in 1873 when the Northern Pacific Railway sent Mike Smith to plant cottonwood and willow trees in the area to serve as windbreaks along the right-of-way. They planned to harvest the trees for lumber to use as railroad ties, but the experiment failed for a number of reasons.
In 1874, Emil Priewe and his wife joined Mike Smith at the station. The Priewe's son, Harry, was born on March 28, 1875 in a sod shanty, the first child born in the developing village.