Lausen is a municipality in the canton Basel-Land, Switzerland. It lies in the middle of the Ergolz valley and has grown together with Liestal. Its population was 4576 in 2004. The main language spoken there is Swiss-German .

The municipality was first mentioned in 1275 by the name Langenso. In 1305 it became property by the Bishop of Basel, in 1400 it became property of the city of Basel.

The most famous citizen of the municipality was the physicist Johann Jakob Balmer.

• ZIP: 4415 Lausen (BL)
• Surface: -12 km², of it ~5 km² forest
• Rain: Precipitation per year 948 mm

External links

• Official Homepage