[3] Marchissy has an area, as of 2009[update], of 11.98 square kilometers (4.63 sq mi).

Of the rest of the land, 0.35 km2 (0.14 sq mi) or 2.9% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.1% is either rivers or lakes.

[5] The municipality is located at the foot of the Jura Mountains on the road to Col du Marchairuz.

The blazon of the municipal coat of arms is Argent, on a Bend sinister vert a Lime-tree/linden tree Flower Or.

[9] Most of the population (as of 2000[update]) speaks French (310 or 89.1%), with German being second most common (14 or 4.0%) and English being third (8 or 2.3%).

[8] The age distribution, as of 2009[update], in Marchissy is; 49 children or 12.3% of the population are between 0 and 9 years old and 67 teenagers or 16.8% are between 10 and 19.

[9] The historical population is given in the following chart:[3][13] The entire village of Marchissy is designated as part of the Inventory of Swiss Heritage Sites.

[14] In the 2007 federal election the most popular party was the SVP which received 19.1% of the vote.

In the federal election, a total of 110 votes were cast, and the voter turnout was 44.2%.

[9] There were 175 residents of the municipality who were employed in some capacity, of which females made up 41.1% of the workforce.

In 2008[update] the total number of full-time equivalent jobs was 51.

The number of jobs in the primary sector was 29, of which 21 were in agriculture and 8 were in forestry or lumber production.

[9] From the 2000 census[update], 90 or 25.9% were Roman Catholic, while 189 or 54.3% 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.

[18] During the school year, the political district provided pre-school care for a total of 1,249 children of which 563 children (45.1%) received subsidized pre-school care.

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