Niederwil was a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

[2] Niederwil has an area, as of 2009[update], of 2.28 square kilometers (0.88 sq mi).

Of the rest of the land, 0.21 km2 (0.081 sq mi) or 9.2% is settled (buildings or roads).

[3] The village is located in the Lebern district, in a small trough near the Siggern.

The blazon of the municipal coat of arms is Azure a Gypsum-pounder, consisting of a Crankshaft, with three Rammers over seven calcareous Stones all Argent.

[6] Most of the population (as of 2000[update]) speaks German (334 or 94.4%), with Albanian being second most common (7 or 2.0%) and Italian being third (3 or 0.8%).

[7] As of 2008[update], the gender distribution of the population was 48.8% male and 51.2% female.

[9] The age distribution, as of 2000[update], in Niederwil is; 21 children or 5.9% of the population are between 0 and 6 years old and 76 teenagers or 21.5% are between 7 and 19.

[6] The historical population is given in the following chart:[2][12] In the 2007 federal election the most popular party was the SP which received 27.55% of the vote.

In the federal election, a total of 142 votes were cast, and the voter turnout was 48.5%.

[6] There were 192 residents of the village who were employed in some capacity, of which females made up 42.7% of the workforce.

The number of jobs in the primary sector was 13, of which 9 were in agriculture and 4 were in forestry or lumber production.

In the tertiary sector; 14 or 56.0% were in the sale or repair of motor vehicles, 4 or 16.0% were in a hotel or restaurant, 2 or 8.0% were in the information industry, 2 or 8.0% were technical professionals or scientists, 3 or 12.0% were in education.

[6] From the 2000 census[update], 153 or 43.2% were Roman Catholic, while 130 or 36.7% belonged to the Swiss Reformed Church.