Oeschenbach is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.

In 1287, St. Urban's Abbey was listed as the major property holder in the village.

The settlements remained separated until 1803, though when they reunited as a community in a political municipality.

Of the rest of the land, 0.2 km2 (0.077 sq mi) or 5.1% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.5% is either rivers or lakes.

It consists of the village of Oeschenbach and the hamlets of Bleuen and Zulligen as well as scattered farm houses.

On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Oberaargau.

[6] The blazon of the municipal coat of arms is Gules a Barrulet wavy Argent overall an Ash Tree eradicated of the same.

[10] Most of the population (as of 2000[update]) speaks German (275 or 98.6%) as their first language, Albanian is the second most common (2 or 0.7%) and French is the third (1 or 0.4%).

The historical population is given in the following chart:[3][13] In the 2011 federal election the most popular party was the SVP which received 45.1% of the vote.

In the federal election, a total of 83 votes were cast, and the voter turnout was 40.9%.

In the tertiary sector; 16 or 64.0% were in wholesale or retail sales or the repair of motor vehicles, 2 or 8.0% were in a hotel or restaurant, 4 or 16.0% were in education.

[10] From the 2000 census[update], 12 or 4.3% were Roman Catholic, while 258 or 92.5% 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.

Following the lower Secondary students may attend additional schooling or they may enter an apprenticeship.