Crassier is a municipality in the district of Nyon in the canton of Vaud in Switzerland.

[3] Crassier has an area, as of 2009[update], of 2 square kilometers (0.77 sq mi).

Of the rest of the land, 0.43 km2 (0.17 sq mi) or 21.2% is settled (buildings or roads).

The blazon of the municipal coat of arms is Gules, a Bar wavy Argent, overall two Keys saltirewise Or, in base a Coupeaux of the last.

[9] Most of the population (as of 2000[update]) speaks French (599 or 77.9%), with German being second most common (57 or 7.4%) and English being third (54 or 7.0%).

[10] The age distribution, as of 2009[update], in Crassier is; 168 children or 16.4% of the population are between 0 and 9 years old and 144 teenagers or 14.0% 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 FDP which received 23.22% of the vote.

[9] There were 398 residents of the municipality who were employed in some capacity, of which females made up 42.0% of the workforce.

In the tertiary sector; 61 or 47.3% were in wholesale or retail sales or the repair of motor vehicles, 30 or 23.3% were in the movement and storage of goods, 9 or 7.0% were in a hotel or restaurant, 1 was in the information industry, 6 or 4.7% were technical professionals or scientists, 11 or 8.5% were in education and 2 or 1.6% were in health care.

[9] From the 2000 census[update], 262 or 34.1% were Roman Catholic, while 268 or 34.9% 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.

Her husband was a wealthy banker of Prussian origins, and her salon in Paris was famous before the French Revolution.