Grandvaux is a former municipality in the Swiss canton of Vaud, located in the district of Lavaux-Oron.

[2] Grandvaux has an area, as of 2009[update], of 2.94 square kilometres (1.14 sq mi).

It stretches from the lake up to the 795 m (2,608 ft) high Signal de Grandvaux.

It consists of the village of Grandvaux, several hamlets including Curson as well as woods in the Jorat.

The blazon of the municipal coat of arms is Gules, an Orb argent.

[7] The age distribution, as of 2009[update], in Grandvaux is; 196 children or 9.7% of the population are between 0 and 9 years old and 228 teenagers or 11.3% are between 10 and 19.

[10] About 59.8% of the total households were owner-occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

[6] The historical population is given in the following chart:[2][13] The Maison Maillardo and part of the UNESCO World Heritage Site: Lavaux, Vineyard Terraces are listed as Swiss heritage site of national significance.

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

[15] In the 2007 federal election the most popular party was the SVP which received 21.35% of the vote.

In the federal election, a total of 680 votes were cast, and the voter turnout was 52.4%.

[6] There were 1,046 residents of the municipality who were employed in some capacity, of which females made up 43.6% of the workforce.

In the tertiary sector; 35 or 22.2% were in the sale or repair of motor vehicles, 6 or 3.8% were in the movement and storage of goods, 29 or 18.4% were in a hotel or restaurant, 3 or 1.9% were in the information industry, 1 was the insurance or financial industry, 14 or 8.9% were technical professionals or scientists, 11 or 7.0% were in education and 45 or 28.5% were in health care.

[6] From the 2000 census[update], 570 or 29.4% were Roman Catholic, while 907 or 46.8% belonged to the Swiss Reformed Church.

In the Vaud cantonal school system, two years of non-obligatory pre-school are provided by the political districts.

The canton's primary school program requires students to attend for four years.

[18] Grandvaux was sister cities with Nagara Furusato in Tōno, Iwate, Japan[21][22]