Selfors sits on the northern shore of the river Ranelva in the northeastern part of the town of Mo i Rana.

Additionally, Selfors has a grocery store (which includes the local post office); a flower shop; a store for hunting, fishing and outdoor life; a petrol station; and an inn located along European route E06.

On 18 May 1940, it was blown up by the resistance in order to slow down the northward advance of the German occupation forces.

The farm was located along the river Ranelva on the western parts of the present-day village of Selfors, near the Ranfjorden and Fossetangen.

Aslak Bolt wrote: "af selfosse 1/2 spann"[5] Selfors thus paid 1/2 bucket of butter to the Archbishop of the Diocese of Nidaros.

Købbforsen which literally means "the pinniped waterfall", is located in another place in Rana Municipality.

The waterfall is located at Fossetangen, and the "silent flowing, deep water" might be to river Ranelva.