Rossemaison is a municipality in the district of Delémont of the canton of Jura in Switzerland.

Of the rest of the land, 0.31 km2 (0.12 sq mi) or 16.4% is settled (buildings or roads).

[5] Of the built up area, housing and buildings made up 13.2% and transportation infrastructure make up 1.1%.

The blazon of the municipal coat of arms is Argent, on Coupeaux Vert a Horse rearing Gules.

[9] Most of the population (as of 2000[update]) speaks French (468 or 93.4%) as their first language, German is the second most common (20 or 4.0%) and Italian is the third (11 or 2.2%).

[9] The historical population is given in the following chart:[3][13] In the 2007 federal election the most popular party was the SPS which received 43.07% of the vote.

In the federal election, a total of 202 votes were cast, and the voter turnout was 47.9%.

[9] There were 252 residents of the municipality who were employed in some capacity, of which females made up 40.9% of the workforce.

In the tertiary sector; 23 or 46.0% were in wholesale or retail sales or the repair of motor vehicles, 2 or 4.0% were in the movement and storage of goods, 1 was in a hotel or restaurant, 17 or 34.0% were technical professionals or scientists, 4 or 8.0% were in education.

[9] From the 2000 census[update], 387 or 77.2% were Roman Catholic, while 65 or 13.0% belonged to the Swiss Reformed Church.

This is followed by three years of obligatory lower Secondary school where the students are separated according to ability and aptitude.

[17] During the 2009-10 school year, there were a total of 55 students attending 4 classes in Rossemaison.