Sayner is a census-designated place in the Town of Plum Lake in Vilas County, Wisconsin, United States. It is located at the intersection of Highway 155 and County N, about 15 miles northwest of Eagle River. As of the 2010 census, its population was 207. Sayner has an area of 1.828 square miles; 1.826 square miles of this is land, and 0.002 square miles is water. Sayner got its name from Orrin W.