Erschwil is a municipality in the district of Thierstein in the canton of Solothurn in Switzerland.

[3] Erschwil has an area, as of 2009[update], of 7.43 square kilometers (2.87 sq mi).

The blazon of the municipality coat of arms is Or a Pick and a Smith's Hammer Sable in Saltire.

[8] Most of the population (as of 2000[update]) speak German (894 or 96.0%), with French being the second most common (12 or 1.3%) and Serbo-Croatian being third (7 or 0.8%).

[9] As of 2008[update], the gender distribution of the population was 49.3% male and 50.7% female.

[7] The age distribution, as of 2000[update], in Erschwil is; 80 children or 8.6% of the population are between 0 and 6 years old and 166 teenagers or 17.8% are between 7 and 19.

The greatest number of single family homes (53) were built between 1981 and 1990.

[8] The historical population is given in the following chart:[3][13] Simon Lutz, author: Book "Erschwil - Leben an der Lüssel"- 768 pages, printed in 2012.

In the 2007 federal election the most popular party was the FDP which received 39.41% of the vote.

In the federal election, a total of 391 votes were cast, and the voter turnout was 56.4%.

[8] There were 449 residents of the municipality who were employed in some capacity, of which females made up 41.2% of the workforce.

In 2008[update] the total number of full-time equivalent jobs was 276.

In the tertiary sector; 15 or 32.6% were in wholesale or retail sales or the repair of motor vehicles, 5 or 10.9% were in the movement and storage of goods, 6 or 13.0% were in a hotel or restaurant, 7 or 15.2% were technical professionals or scientists, 5 or 10.9% were in education.

[8] From the 2000 census[update], 723 or 77.7% were Roman Catholic, while 103 or 11.1% belonged to the Swiss Reformed Church.

The education system in the Canton of Solothurn allows young children to attend two years of non-obligatory Kindergarten.

All the lower secondary students from Erschwil attend their school in a neighboring municipality.