Kopparberg is a locality and the seat of Ljusnarsberg Municipality, Örebro County, Sweden, with 4,200 inhabitants in 2015. It is famous for one of the most valuable postage stamps in the world, the Treskilling Yellow from 1857-July-13, Kopparberg's (wooden) Church (voted #1 in Sweden in 2006), and Kopparberg Cider, now the number 1 selling cider in the UK and worldwide.

Kopparberg is a locality and the seat of Ljusnarsberg Municipality, Örebro County, Sweden, with 4,200 inhabitants in 2015. It is famous for one of the most valuable postage stamps in the world, the Treskilling Yellow from 1857-July-13, Kopparberg's (wooden) Church (voted #1 in Sweden in 2006), and Kopparberg Cider, now the number 1 selling cider in the UK and worldwide.