Loket is a town in Sokolov District in the Karlovy Vary Region of the Czech Republic. It has about 3,100 inhabitants. The town is known for the L…Loket is a town in Sokolov District in the Karlovy Vary Region of the Czech Republic. It has about 3,100 inhabitants. The town is known for the Loket Castle, a 12th-century Gothic castle. The historic town centre is well preserved and is protected by law as an urban monument reservation.