Bonvillars is a municipality in the district of Jura-Nord Vaudois in the canton of Vaud in Switzerland.

Sir John was a household knight in the service of King Edward I of England.

Bonvillars held the post of Deputy Justicier of Wales prior to being First Constable of Harlech Castle from 1285 to his death by drowning (probably during siege of Dryslwyn in South Wales) between July and November 1287.

[4] Bonvillars has an area, as of 2009[update], of 7.54 square kilometres (2.91 sq mi).

Of the rest of the land, 0.48 km2 (0.19 sq mi) or 6.4% is settled (buildings or roads), 0.05 km2 (12 acres) or 0.7% is either rivers or lakes.

[6] The municipality is located at the foot of the Jura Mountains and stretches from Lake Neuchatel to Mont Aubert.

It consists of the village of Bonvillars and the settlements of La Coudre and Les Vullierens.

The blazon of the municipal coat of arms is Argent, a saltire Azure, on a chief of the first three mullets of five of the second.

[10] Most of the population (as of 2000[update]) speaks French (330 or 95.9%), with German being second most common (8 or 2.3%) and Italian being third (3 or 0.9%).

[9] The age distribution, as of 2009[update], in Bonvillars is; 48 children or 10.6% of the population are between 0 and 9 years old and 74 teenagers or 16.3% are between 10 and 19.

[10] The historical population is given in the following chart:[3][14] The entire village of Bonvillars is designated as part of the Inventory of Swiss Heritage Sites.

In the federal election, a total of 142 votes were cast, and the voter turnout was 43.6%.

In the tertiary sector; 2 or 11.1% were in wholesale or retail sales or the repair of motor vehicles, 1 was in the movement and storage of goods, 1 was the insurance or financial industry, 4 or 22.2% were technical professionals or scientists, 3 or 16.7% were in education and 2 or 11.1% were in health care.

[10] From the 2000 census[update], 62 or 18.0% were Roman Catholic, while 234 or 68.0% 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.

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