Joachimsthal was founded in 1601 by Elector Joachim III Frederick of Brandenburg at the foot of medieval Grimnitz Castle and received town privileges in 1604. The Elector had a glass foundry erected and in 1607 established a boarding school, the Joachimsthalsches Gymnasium, that was relocated to Berlin after its devastation in 1636 during the Thirty Years' War. After a blaze in 1814, the church and several houses were rebuilt according to plans by Karl Friedrich Schinkel.
Development of population since 1875 within the current boundaries (Blue line: Population; Dotted line: Comparison to population development of Brandenburg state; Grey background: Time of Nazi rule; Red background: Time of communist rule)
Population development within the current boundaries (2013)