[5] The municipality is located in the Porrentruy district, along the Allaine and Cornolbach rivers.

It is one of the largest villages in the Ajoie, with distinctive row houses from the 17th and 18th centuries along the rivers.

The blazon of the municipal coat of arms is Gules, on a Bend Argent three Torteaux.

[9] Most of the population (as of 2000[update]) speaks French (1,436 or 93.1%) as their first language, Italian is the second most common (45 or 2.9%) and German is the third (24 or 1.6%).

[9] The historical population is given in the following chart:[3][13] The Noir Bois, a paleolithic and medieval settlement and the Pré Monsieur paleolithic settlement are listed as Swiss heritage site of national significance.

The entire urban village of Alle is part of the Inventory of Swiss Heritage Sites.

[14] In the 2007 federal election the most popular party was the CVP which received 45.39% of the vote.

[9] There were 755 residents of the municipality who were employed in some capacity, of which females made up 41.3% of the workforce.

The number of jobs in the primary sector was 49, of which 39 were in agriculture and 10 were in forestry or lumber production.

In the tertiary sector; 118 or 52.9% were in wholesale or retail sales or the repair of motor vehicles, 22 or 9.9% were in the movement and storage of goods, 20 or 9.0% were in a hotel or restaurant, 8 or 3.6% were the insurance or financial industry, 3 or 1.3% were technical professionals or scientists, 14 or 6.3% were in education and 12 or 5.4% were in health care.

[9] From the 2000 census[update], 1,313 or 85.1% were Roman Catholic, while 94 or 6.1% 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.

[18] During the 2009-10 school year, there were a total of 197 students attending 12 classes in Alle.