It consists of the village of Lajoux and the hamlets of Fornet-Dessus and Les Vacheries.

[6] The blazon of the municipal coat of arms is Azure, issuant from sinister a hand clad Argent holding a crosier Or in pale issuant from base.

[10] Most of the population (as of 2000[update]) speaks French (572 or 94.4%) as their first language, German is the second most common (25 or 4.1%) and Italian is the third (3 or 0.5%).

[10] The historical population is given in the following chart:[3][14] In the 2007 federal election the most popular party was the SPS which received 55.98% of the vote.

In the federal election, a total of 203 votes were cast, and the voter turnout was 39.3%.

[10] There were 303 residents of the municipality who were employed in some capacity, of which females made up 45.2% of the workforce.

In 2008[update] the total number of full-time equivalent jobs was 168.

The number of jobs in the secondary sector was 73 of which 54 or (74.0%) were in manufacturing and 18 (24.7%) were in construction.

In the tertiary sector; 10 or 16.7% were in wholesale or retail sales or the repair of motor vehicles, 2 or 3.3% were in the movement and storage of goods, 6 or 10.0% were in a hotel or restaurant, 2 or 3.3% were technical professionals or scientists, 6 or 10.0% were in education and 31 or 51.7% were in health care.

[10] From the 2000 census[update], 473 or 78.1% were Roman Catholic, while 52 or 8.6% 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.

[18] During the 2009-10 school year, there were a total of 79 students attending 4 classes in Lajoux.