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is a city in Traill County, North Dakota in the United States. The population was 1,953 at the 2000 census which makes Mayville the largest community in Traill County. Mayville was founded in 1881.
Mayville is often grouped with the neighboring city of Portland. The two towns are sometimes given the name May-Port. Mayville State University is located in Mayville.
Mayville sits in the fertile Red River Valley on the banks of the Goose River. The Valley was once a part of glacial Lake Agassiz. As the glacier receded, it left the land very flat, but also very rich. The area around Mayville is prime agricultural land.
According to the United States Census Bureau, the city has a total area of 1.6 square miles (4.2 km²), all of it land.
In the summer of 2006, the community celebrated the city's 125th anniversary.