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

[3] During the Middle Ages the major landowners in Lotzwil included St. Urban's Abbey and the Thunstetten Commandery.

Following the 1798 French invasion, the bailiwick was dissolved and the village became part of the District of Langenthal.

[3] During the 18th century, the economic boom in nearby Langenthal spread to Lotzwil.

Starting in the 1960s Lotzwil became a commuter town for Langenthal and several new housing developments were built for the growing population.

In 1988, a regional nursing home, serving ten surrounding municipalities, opened.

In the 19th century the community built a spa hotel, which was abandoned in the interwar period.

Of the rest of the land, 0.96 km2 (0.37 sq mi) or 15.5% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.2% is either rivers or lakes.

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

The blazon of the municipal coat of arms is Argent a Lion rampant Azure langued and viriled Gules.

[10] Most of the population (as of 2000[update]) speaks German (2,109 or 90.4%) as their first language, Albanian is the second most common (87 or 3.7%) and Italian is the third (42 or 1.8%).

The historical population is given in the following chart:[3][13] The Farm House Ingold-Hof and village church's rectory are listed as Swiss heritage sites of national significance.

The number of jobs in the primary sector was 33, of which 31 were in agriculture and 1 was in forestry or lumber production.

In the tertiary sector; 95 or 41.5% were in wholesale or retail sales or the repair of motor vehicles, 7 or 3.1% were in the movement and storage of goods, 19 or 8.3% were in a hotel or restaurant, 1 was the insurance or financial industry, 16 or 7.0% were technical professionals or scientists, and 57 or 24.9% were in health care.

[10] From the 2000 census[update], 285 or 12.2% were Roman Catholic, while 1,571 or 67.3% 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.

[18] During the 2009–10 school year, there were a total of 263 students attending classes in Lotzwil.