Saint-Léonard is a municipality in the district of Sierre in the canton of Valais in Switzerland.

[3] Saint-Léonard has an area, as of 2009[update], of 3.9 square kilometers (1.5 sq mi).

The original haufendorf village (an irregular, unplanned and quite closely packed village, built around a central square) was located on the left side of the Lienne and along the right side of the Rhone valley.

The blazon of the municipal coat of arms is Azure, issuant from Coupeaux Vert a Pine tree of the same trunked proper between in chief two Mullets of Five Or.

[8] Most of the population (as of 2000[update]) speaks French (1,741 or 93.0%) as their first language, German is the second most common (53 or 2.8%) and Portuguese is the third (38 or 2.0%).

[8] The historical population is given in the following chart:[3][12] The neolithic rock carving at Crête Des Barmes is listed as a Swiss heritage site of national significance.

In the 2007 federal election the most popular party was the CVP which received 36.76% of the vote.

In the federal election, a total of 1,053 votes were cast, and the voter turnout was 72.6%.

[8] There were 892 residents of the municipality who were employed in some capacity, of which females made up 40.5% of the workforce.

The number of jobs in the secondary sector was 87 of which 20 or (23.0%) were in manufacturing, 21 or (24.1%) were in mining and 45 (51.7%) were in construction.

In the tertiary sector; 67 or 29.4% were in wholesale or retail sales or the repair of motor vehicles, 16 or 7.0% were in the movement and storage of goods, 39 or 17.1% were in a hotel or restaurant, 10 or 4.4% were in the information industry, 11 or 4.8% were the insurance or financial industry, 8 or 3.5% were technical professionals or scientists, 3 or 1.3% were in education and 54 or 23.7% were in health care.

[8] From the 2000 census[update], 1,688 or 90.2% were Roman Catholic, while 46 or 2.5% belonged to the Swiss Reformed Church.