Winchester is a city in western Lewis County, Idaho, United States, located on the Camas Prairie in the north central part of the state. The population was 356 at the 2020 census, up from 340 in 2010. History Winchester is within the Nez Perce Indian Reservation, and similar to the opening of lands in Oklahoma, the U.S. government opened the reservation for white settlement in November 1895. The proclamation had been signed less than two weeks earlier by President Cleveland. The city was named in 1900 during a meeting to establish a school district. While considering the possibilities, an individual looked at the stack of Winchester rifles at the door and suggested the name, which was approved. The sawmill closed in May 1965 after the mature timber in the area had been cut. The mill was operated by Boise Cascade for its final five years; its closure followed a fire which destroyed much of downtown Winchester in November 1964. A half mile (1 km) outside of town is Winchester Lake State Park, planned in 1966 and established in 1969. Originally it was a mill pond, created in 1910 by damming Lapwai Creek. Water quality issues at the lake were addressed with the installation of aeration units in 2002. Geography Winchester is located at , at an elevation of above sea level. According to the United States Census Bureau, the city has a total area of , all of it land. Winchester is located on the northern shore of Lapwai Lake at the location where Lapwai Creek emerges from the lake. U.S. Route 95 passes about a mile to the northeast of Winchester, but the town is connected to the highway by a business route of U.S. 95. It is located in the broader Camas Prairie region. Climate Demographics 2010 census As of the census of 2010, there were 340 people, 134 households, and 84 families residing in the city. The population density was . There were 167 housing units at an average density of . The racial makeup of the city was 92.1% White, 1.2% African American, 3.2% Native American, 0.3% Asian, 0.9% from other races, and 2.4% from two or more races. Hispanic or Latino of any race were 2.1% of the population. There were 134 households, of which 20.1% had children under the age of 18 living with them, 52.2% were married couples living together, 6.0% had a