Penthéréaz is a municipality in the district of Gros-de-Vaud in the canton of Vaud in Switzerland.

[3] Penthéréaz has an area, as of 2009[update], of 5.68 square kilometers (2.19 sq mi).

Of the rest of the land, 0.31 km2 (0.12 sq mi) or 5.5% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.2% is either rivers or lakes.

The blazon of the municipal coat of arms is Per pale Or and Gules, two Corn Ears counterchanged.

[9] Most of the population (as of 2000[update]) speaks French (325 or 95.0%), with German being second most common (7 or 2.0%) and Portuguese being third (6 or 1.8%).

[8] The age distribution, as of 2009[update], in Penthéréaz is; 46 children or 12.5% of the population are between 0 and 9 years old and 52 teenagers or 14.2% are between 10 and 19.

[9] The historical population is given in the following chart:[3][13] In the 2007 federal election the most popular party was the SVP which received 21.95% of the vote.

In the federal election, a total of 104 votes were cast, and the voter turnout was 41.1%.

[9] There were 181 residents of the municipality who were employed in some capacity, of which females made up 45.3% of the workforce.

The number of jobs in the secondary sector was 23 of which 9 or (39.1%) were in manufacturing and 14 (60.9%) were in construction.

The number of jobs in the tertiary sector was 14, of which 10 or 71.4% were in the information industry and 4 or 28.6% were in education.

[9] From the 2000 census[update], 77 or 22.5% were Roman Catholic, while 219 or 64.0% 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.

[17] During the school year, the political district provided pre-school care for a total of 296 children of which 96 children (32.4%) received subsidized pre-school care.

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