Grafton is a city in the State of North Dakota and is the county seat of Walsh County. As of the 2010 Census, the city of Grafton had a population of 4,284, making it the fourteenth largest city in North Dakota. Grafton was founded in 1881.HistoryGrafton had its start in the year 1881 by the building of the railroad through that territory. Also in 1881, Walsh County was established and Grafton was designated the county seat. The city was named for Grafton County, New Hampshire, the native home of a large share of its early settlers.The Grafton State School, a home for the developmentally disabled, is listed on the National Register of Historic Places.GeographyGrafton is located at .According to the United States Census Bureau, the city has a total area of 3.40sqmi, all of it land.Demographics2010 censusAs of the census of 2010, there were 4,284 people, 1,776 households, and 1,073 families residing in the city. The population density was 1260.0PD/sqmi. There were 1,990 housing units at an average density of 585.3/sqmi. The racial makeup of the city was 89.2% White, 0.4% African American, 2.8% Native American, 0.4% Asian, 0.1% Pacific Islander, 5.4% from other races, and 1.7% from two or more races. Hispanic or Latino of any race were 14.1% of the population.