Diemerswil is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland.

[3] The earliest trace of people in the area is a Hallstatt culture grave mound with a cart or wagon, in the Brandwald.

During the Middle Ages it belonged to the Herrschaft, court and parish of the Münchenbuchsee Commandery.

[3] During the 19th century, many of local farmers began to raise dairy cattle instead of or in addition to their traditional crops.

The so-called Schloss, an elegant country manor house, was demolished in 1969.

At the same time about half the residents commuted for work in other communities, especially Bern.

Of the rest of the land, 0.17 km2 (0.066 sq mi) or 5.9% is settled (buildings or roads).

On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Bern-Mittelland.

[6] The blazon of the municipal coat of arms is Per fess Gules a Cross Argent and of the second a Rose of the first barbed, seeded, slipped and leaved proper.

[10] Most of the population (as of 2000[update]) speaks German (163 or 97.6%) as their first language, French is the second most common (3 or 1.8%) and Portuguese is the third (1 or 0.6%).

[10] From the 2000 census[update], 5 or 3.0% were Roman Catholic, while 132 or 79.0% 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.

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