Troistorrents has an area, as of 2009, of 37 square kilometers (14 sq mi).
 Of this area, 13.54 km² (5.23 sq mi) or 36.6% is used for agricultural purposes, while 19.14 km² (7.39 sq mi) or 51.8% is forested.
  Of the rest of the land, 2.72 km² (1.05 sq mi) or 7.4% is settled (buildings or roads), 0.21 km² (0.081 sq mi) or 0.6% is either rivers or lakes and 1.34 km² (0.52 sq mi) or 3.6% is unproductive land.

Of the built up area, housing and buildings made up 4.6% and transportation infrastructure made up 2.3%.
 Out of the forested land, 47.5% of the total land area is heavily forested and 2.9% is covered with orchards or small clusters of trees.
 Of the agricultural land, 0.0% is used for growing crops and 8.9% is pastures and 27.1% is used for alpine pastures.
 All the water in the municipality is flowing water.

The municipality includes the village of Morgins.

It is located in the Val d'Illiez.
It is the starting point to reach Morgins via the Val de Morgins.
The name Troistorrents comes from the Latin "trans torrentium" which means "on the other side of the torrent".
Troistorrents has an area, as of 2009, of 37 square kilometers (14 sq mi).  Of this area, 13.54 km² (5.23 sq mi) or 36.6% is used for agricultural purposes, while 19.14 km² (7.39 sq mi) or 51.8% is forested.   Of the rest of the land, 2.72 km² (1.05 sq mi) or 7.4% is settled (buildings or roads), 0.21 km² (0.081 sq mi) or 0.6% is either rivers or lakes and 1.34 km² (0.52 sq mi) or 3.6% is unproductive land.
Of the built up area, housing and buildings made up 4.6% and transportation infrastructure made up 2.3%.  Out of the forested land, 47.5% of the total land area is heavily forested and 2.9% is covered with orchards or small clusters of trees.  Of the agricultural land, 0.0% is used for growing crops and 8.9% is pastures and 27.1% is used for alpine pastures.  All the water in the municipality is flowing water.
The municipality includes the village of Morgins.
It is located in the Val d'Illiez. It is the starting point to reach Morgins via the Val de Morgins. The name Troistorrents comes from the Latin "trans torrentium" which means "on the other side of the torrent".
Troistorrents