|Population||16100 (30 June 2007)|
|Area||26.08 km2 (10.07 sq mi)|
|Elevation||451 m (1,480 ft)|
|Mayor||Boris Banga (SPS)|
|Arch (BE), Bettlach, Büren an der Aare (BE), Court (BE), Lengnau (BE), Romont (BE), Rüti bei Büren (BE), Selzach|
|Twin towns||Neckarsulm (Germany), Sélestat (France)|
With a population of around 16,000 people, it is one of the largest municipalities in the canton of Solothurn.
In the year 1000, a castle was built in Grenchen and was lived in for a few hundred years, but the name Grenchen was not first used until 1131. Its name comes from the Gallo-Romanic word graneca, which means by the grainery.