Treyvaux (French: [tʁɛːvo]; Arpitan: Trèvâlx [tʁiˈvo] ⓘ) is a municipality and a village in the district of Sarine in the canton of Fribourg in Switzerland.

[3] Over the time it was known under numerous variations of the Latin name: Tresvaux, Trevaux, Tresvals, Trevauz, Trevoul, Treyvaul, Treyvas, Trevas, Trefels.

[4] Treyvaux has an area, as of 2009[update], of 11.4 square kilometers (4.4 sq mi).

[9] Most of the population (as of 2000[update]) speaks French (1,165 or 93.3%) as their first language, German is the second most common (41 or 3.3%) and Portuguese is the third (23 or 1.8%).

[9] The historical population is given in the following chart:[3][13] The former Church of Saint-Pierre and the farm house at Le Pré de la Maison 12 are listed as Swiss heritage site of national significance.

[9] There were 611 residents of the municipality who were employed in some capacity, of which females made up 40.3% of the workforce.

The number of jobs in the primary sector was 72, of which 68 were in agriculture and 4 were in forestry or lumber production.

In the tertiary sector; 14 or 14.6% were in wholesale or retail sales or the repair of motor vehicles, 5 or 5.2% were in the movement and storage of goods, 7 or 7.3% were in a hotel or restaurant, 1 was in the information industry, 5 or 5.2% were the insurance or financial industry, 7 or 7.3% were technical professionals or scientists, 11 or 11.5% were in education and 3 or 3.1% were in health care.

[9] From the 2000 census[update], 1,145 or 91.7% were Roman Catholic, while 38 or 3.0% belonged to the Swiss Reformed Church.

This is followed by three years of obligatory lower Secondary school where the students are separated according to ability and aptitude.

The upper Secondary school is divided into gymnasium (university preparatory) and vocational programs.

After they finish the upper Secondary program, students may choose to attend a Tertiary school or continue their apprenticeship.

[19] During the 2010-11 school year, there were a total of 161 students attending 8 classes in Treyvaux.