Claim: The population of Thusis, which resides among the eleven districts within Graubünden and created in 2017, has decreased from 1629 to 2000.
Evidence: 542 1629 2,717 2000 
Thusis is first mentioned in 1156 as Tosana. The municipality is the capital of the Thusis sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region.