Lommiswil is a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

[3] Lommiswil has an area, as of 2009[update], of 5.78 square kilometers (2.23 sq mi).

Of the rest of the land, 0.74 km2 (0.29 sq mi) or 12.8% is settled (buildings or roads).

[4] The municipality is located in the Lebern district, on a plateau in the southern foothills of the Jura Mountains.

It consists of the village of Lommiswil and the settlement of Im Holz.

The blazon of the municipal coat of arms is Azure a Lamb Argent passant over a base Vert holding a Flagstaff Or with a swallow-tailed Flag Gules a Cross Argent.

[8] Most of the population (as of 2000[update]) speaks German (1,338 or 95.6%), with French being second most common (13 or 0.9%) and Italian being third (12 or 0.9%).

[9] As of 2008[update], the gender distribution of the population was 51.5% male and 48.5% female.

[7] The age distribution, as of 2000[update], in Lommiswil is; 106 children or 7.6% of the population are between 0 and 6 years old and 234 teenagers or 16.7% are between 7 and 19.

[8] The historical population is given in the following chart:[3][13] In the 2007 federal election the most popular party was the SVP which received 24.93% of the vote.

In the federal election, a total of 629 votes were cast, and the voter turnout was 59.4%.

[8] There were 781 residents of the municipality who were employed in some capacity, of which females made up 43.5% of the workforce.

In the tertiary sector; 9 or 14.3% were in wholesale or retail sales or the repair of motor vehicles, 4 or 6.3% were in the movement and storage of goods, 4 or 6.3% were in a hotel or restaurant, 14 or 22.2% were in the information industry, 10 or 15.9% were technical professionals or scientists, 8 or 12.7% were in education and 4 or 6.3% were in health care.

[8] From the 2000 census[update], 631 or 45.1% were Roman Catholic, while 523 or 37.4% belonged to the Swiss Reformed Church.