Grengiols is a municipality in the district of Raron in the canton of Valais in Switzerland.

[3] Grengiols has an area, as of 2011[update], of 58.5 square kilometers (22.6 sq mi).

It consists of the village of Grengiols with scattered settlements including; Hockmatte, Ze Hyschere, Bächerhyschere and others, on the road leading into the Goms valley and then over the Albrun Pass.

The blazon of the municipal coat of arms is Gules, two Keys Or in saltire in chief a papal Crown of the same.

[4] Most of the population (as of 2000[update]) speaks German (481 or 98.0%) as their first language, French is the second most common (4 or 0.8%) and English is the third (2 or 0.4%).

[4] The historical population is given in the following chart:[3][10] The entire village of Grengiols is designated as part of the Inventory of Swiss Heritage Sites.

[13] In the 2007 Swiss Council of States election a total of 175 votes were cast, of which 11 or about 6.3% were invalid.

[4] There were 209 residents of the municipality who were employed in some capacity, of which females made up 35.4% of the workforce.

In the tertiary sector; 5 or 9.3% were in wholesale or retail sales or the repair of motor vehicles, 1 was in the movement and storage of goods, 7 or 13.0% were in a hotel or restaurant, 2 or 3.7% were the insurance or financial industry, 28 or 51.9% were technical professionals or scientists, 4 or 7.4% were in education.

[4] From the 2000 census[update], 449 or 91.4% were Roman Catholic, while 16 or 3.3% belonged to the Swiss Reformed Church.

The education system in the Canton of Valais allows young children to attend one year of non-obligatory Kindergarten.

All the lower and upper secondary students from Grengiols attend their school in a neighboring municipality.