Pello is a municipality located in the western part of the province of Lapland in Finland. It is situated approximately 20 kilometres north of the Arctic Circle and sits along the national border with Sweden, where it is bounded by the Tornio River.
The municipality covers an area of 1,864.66 square kilometres, of which 126.12 square kilometres is water. It has a population of 3,146 people, resulting in a population density of approximately 1.81 inhabitants per square kilometre.