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 (4.73 km2); 1.826 square miles (4.73 km2) of this is land, and 0.002 square miles (0.0052 km2) is water. Sayner got its name from Orrin W. Sayner, who settled the area in 1891, two years before any other settlers took up homes in the town. In 1895, the Milwaukee Road extended its Valley Line north from Woodruff to Star Lake, with a stop in Sayner. The line primarily carried lumber from area forests, later carried tourists and had been abandoned in the middle 20th century.