Perroy (French pronunciation: [pɛʁwa] ⓘ) is a municipality in the district of Nyon in the canton of Vaud in Switzerland.

[3] Perroy has an area, as of 2009[update], of 2.9 square kilometers (1.1 sq mi).

Of the rest of the land, 0.89 km2 (0.34 sq mi) or 30.7% is settled (buildings or roads).

[9] Most of the population (as of 2000[update]) speaks French (918 or 83.2%), with German being second most common (63 or 5.7%) and Portuguese being third (49 or 4.4%).

[10] The age distribution, as of 2009[update], in Perroy is; 172 children or 13.0% of the population are between 0 and 9 years old and 149 teenagers or 11.3% are between 10 and 19.

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

[14] Perroy is twinned with: In the 2007 federal election the most popular party was the SVP which received 27.84% of the vote.

[9] There were 628 residents of the municipality who were employed in some capacity, of which females made up 42.8% of the workforce.

The number of jobs in the primary sector was 46, of which 42 were in agriculture and 4 were in fishing or fisheries.

In the tertiary sector; 83 or 59.7% were in wholesale or retail sales or the repair of motor vehicles, 5 or 3.6% were in the movement and storage of goods, 12 or 8.6% were in a hotel or restaurant, 1 was the insurance or financial industry, 10 or 7.2% were technical professionals or scientists, 4 or 2.9% were in education.

[9] From the 2000 census[update], 305 or 27.6% were Roman Catholic, while 502 or 45.5% 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.