The town of Monson, Maine was first settled in 1818 and incorporated in 1822. Monson was named after Monson, Massachusetts, the source of Monson's earliest settlers, and rests on the banks of Lake Hebron.
The Appalachian Trail crosses Maine Route 15 just a few miles north of Monson at what is known as The Ledges. Monson is therefore the last town that northbound hikers encounter before embarking on the One-Hundred Mile Wilderness, or the first town southbound hikers encounter after completing the One-Hundred Mile Wilderness.