Crissier (French pronunciation: [kʁisje]) is a municipality in the district of Ouest Lausannois in the canton of Vaud in Switzerland.

Of the rest of the land, 2.66 km2 (1.03 sq mi) or 48.3% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.2% is either rivers or lakes.

while parks, green belts and sports fields made up 2.0%.

The blazon of the municipal coat of arms is Per pale Argent and Gules, overall two crossed Rifles saltirewise Sable lined of the first.

[9] Most of the population (as of 2000[update]) speaks French (4,996 or 76.0%), with Italian being second most common (355 or 5.4%) and Portuguese being third (330 or 5.0%).

[8] The age distribution, as of 2009[update], in Crissier is; 842 children or 12.1% of the population are between 0 and 9 years old and 942 teenagers or 13.6% are between 10 and 19.

The greatest number of single family homes (214) were built between 1981 and 1990.

[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 25.31% of the vote.

In the federal election, a total of 1,196 votes were cast, and the voter turnout was 41.0%.

[9] There were 3,336 residents of the municipality who were employed in some capacity, of which females made up 42.7% of the workforce.

In 2008[update] the total number of full-time equivalent jobs was 7,233.

The number of jobs in the secondary sector was 2,283 of which 1,355 or (59.4%) were in manufacturing and 875 (38.3%) were in construction.

In the tertiary sector; 2,861 or 58.0% were in wholesale or retail sales or the repair of motor vehicles, 127 or 2.6% were in the movement and storage of goods, 419 or 8.5% were in a hotel or restaurant, 126 or 2.6% were in the information industry, 69 or 1.4% were the insurance or financial industry, 312 or 6.3% were technical professionals or scientists, 100 or 2.0% were in education and 43 or 0.9% were in health care.

[9] From the 2000 census[update], 2,897 or 44.0% were Roman Catholic, while 1,735 or 26.4% 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 803 children of which 502 children (62.5%) received subsidized pre-school care.

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