The County of Saarbrücken was an Imperial State in the Upper Lorraine region, with its capital at Saarbrücken. From 1381 it belonged to the Walram branch of the Rhenish House of Nassau.

Saarbrücken is the capital and largest city of the state of Saarland, Germany. Saarbrücken has 181,959 inhabitants and is Saarland's administrative, commercial and cultural centre. It is located on the Saar River, directly borders the French department of Moselle, and is Germany's second-westernmost state capital after Düsseldorf.