[3] La Sagne has an area, as of 2009[update], of 25.6 square kilometers (9.9 sq mi).

The blazon of the municipal coat of arms is Argent, issuant from three Mounts Vert as many Pine trees of the same.

[9] Most of the population (as of 2000[update]) speaks French (946 or 94.9%) as their first language, German is the second most common (29 or 2.9%) and Italian is the third (8 or 0.8%).

[9] The historical population is given in the following chart:[3][13] The Double House and the Church are listed as Swiss heritage site of national significance.

The entire village of La Sagne is part of the Inventory of Swiss Heritage Sites.

[14] In the 2007 federal election the most popular party was the SVP which received 29.8% of the vote.

In the federal election, a total of 415 votes were cast, and the voter turnout was 51.6%.

[9] There were 494 residents of the municipality who were employed in some capacity, of which females made up 43.3% of the workforce.

The number of jobs in the primary sector was 69, of which 68 were in agriculture and 1 was in forestry or lumber production.

In the tertiary sector; 33 or 18.4% were in wholesale or retail sales or the repair of motor vehicles, 12 or 6.7% were in the movement and storage of goods, 16 or 8.9% were in a hotel or restaurant, 1 was in the information industry, 1 was the insurance or financial industry, 24 or 13.4% were technical professionals or scientists, 4 or 2.2% were in education and 82 or 45.8% were in health care.

[9] From the 2000 census[update], 177 or 17.8% were Roman Catholic, while 583 or 58.5% belonged to the Swiss Reformed Church.

[18] During the 2010-11 school year, there were 1.5 kindergarten classes with a total of 27 students in La Sagne.