Dexter is located in the beautiful wooded hills of southeastern Cowley County [CL] on highway K-15. The town is on the side of the valley overlooking Grouse Creek and some of the streets slope dramatically.

An historical marker south of town at US 166 and K-15 describes the discovery of helium in the area in the early 1900s. There are historic images online from the WSU library, and information about the early history of Dexter from the 1883 Cutlers History of Kansas is also available.