Wilderness, Missouri
Wilderness is an unincorporated community in northeast Oregon County, in the U.S. state of Missouri. The community is at the end of Missouri Route K within the Irish Wilderness area of the Mark Twain National Forest. The Eleven Point River is three miles to the southeast and Alton is twelve miles to the southeast. History. A post office called Wilderness was established in 1882, and remained in operation until 1954. The community derives its name from a region originally called "Irish Wilderness", a former Irish colony which was abandoned on account of Civil War violence.