Mayville is a city in Traill County, North Dakota, United States. The population was 1,854 at the 2020 census. which makes Mayville the largest community in Traill County. Mayville was founded in 1881. The city's name remembers May Arnold, the first white child born in the immediate area.

Traill County is a county in the U.S. state of North Dakota. As of the 2020 census listed the population at 7,997. Its county seat is Hillsboro, and its largest city is Mayville.